Replace all references to the gh_pages javadoc with javadoc.io.

Author: nedtwigg

plugin-gradle/CHANGES.md

@@ -227,7 +227,7 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 * BREAKING CHANGE: `customReplace` and `customReplaceRegex` renamed to just `replace` and `replaceRegex`.
 * BREAKING CHANGE: Plugin portal ID is still `com.diffplug.gradle.spotless`, but maven coordinate has changed to `com.diffplug.spotless:spotless-plugin-gradle`.
 * HUGE SPEEDUP: Now supports incremental build / up-to-date-checking.
-  + If you are using `custom` or `customLazy`, you might want to take a look at [this javadoc](https://diffplug.github.io/spotless/javadoc/snapshot/spotless-gradle-plugin/snapshot/com/diffplug/gradle/spotless/FormatExtension.html#bumpThisNumberIfACustomStepChanges-int-).
+  + If you are using `custom` or `customLazy`, you might want to take a look at [this javadoc](https://javadoc.io/static/com.diffplug.spotless/spotless-plugin-gradle/3.27.0/com/diffplug/gradle/spotless/FormatExtension.html#bumpThisNumberIfACustomStepChanges-int-).
 * BREAKING CHANGE: `freshmark` no longer includes all project properties by default.  All properties must now be added manually:
 
 ```gradle

plugin-gradle/README.md

@@ -4,7 +4,7 @@
 output = [
   link(shield('Gradle plugin', 'plugins.gradle.org', 'com.diffplug.gradle.spotless', 'blue'), 'https://plugins.gradle.org/plugin/com.diffplug.gradle.spotless'),
   link(shield('Maven central', 'mavencentral', 'com.diffplug.gradle.spotless:spotless', 'blue'), 'https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.diffplug.spotless%22%20AND%20a%3A%22spotless-plugin-gradle%22'),
-  link(shield('Javadoc', 'javadoc', '{{stableGradle}}', 'blue'), 'https://{{org}}.github.io/{{name}}/javadoc/spotless-plugin-gradle/{{stableGradle}}/'),
+  link(shield('Javadoc', 'javadoc', '{{stableGradle}}', 'blue'), 'https://javadoc.io/doc/com.diffplug.spotless/spotless-plugin-gradle/{{stableGradle}}/index.html'),
   '',
   link(shield('Changelog', 'changelog', '{{versionGradle}}', 'brightgreen'), 'CHANGES.md'),
   link(image('Travis CI', 'https://travis-ci.org/{{org}}/{{name}}.svg?branch=master'), 'https://travis-ci.org/{{org}}/{{name}}'),
@@ -14,7 +14,7 @@ output = [
 -->
 [![Gradle plugin](https://img.shields.io/badge/plugins.gradle.org-com.diffplug.gradle.spotless-blue.svg)](https://plugins.gradle.org/plugin/com.diffplug.gradle.spotless)
 [![Maven central](https://img.shields.io/badge/mavencentral-com.diffplug.gradle.spotless%3Aspotless-blue.svg)](https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.diffplug.spotless%22%20AND%20a%3A%22spotless-plugin-gradle%22)
-[![Javadoc](https://img.shields.io/badge/javadoc-3.27.0-blue.svg)](https://diffplug.github.io/spotless/javadoc/spotless-plugin-gradle/3.27.0/)
+[![Javadoc](https://img.shields.io/badge/javadoc-3.27.0-blue.svg)](https://javadoc.io/doc/com.diffplug.spotless/spotless-plugin-gradle/3.27.0/index.html)
 
 [![Changelog](https://img.shields.io/badge/changelog-3.28.0--SNAPSHOT-brightgreen.svg)](CHANGES.md)
 [![Travis CI](https://travis-ci.org/diffplug/spotless.svg?branch=master)](https://travis-ci.org/diffplug/spotless)
@@ -23,7 +23,7 @@ output = [
 <!---freshmark /shields -->
 
 <!---freshmark javadoc
-output = prefixDelimiterReplace(input, 'https://{{org}}.github.io/{{name}}/javadoc/spotless-plugin-gradle/', '/', stableGradle)
+output = prefixDelimiterReplace(input, 'https://javadoc.io/static/com.diffplug.spotless/spotless-plugin-gradle/', '/', stableGradle)
 -->
 
 Spotless is a general-purpose formatting plugin used by [2,700 projects on GitHub (Jan 2020)](https://github.com/search?l=gradle&q=spotless&type=Code).  It is completely à la carte, but also includes powerful "batteries-included" if you opt-in.
@@ -75,7 +75,7 @@ spotless {
 }
 ```
 
-Spotless can check and apply formatting to any plain-text file, using simple rules ([javadoc](https://diffplug.github.io/spotless/javadoc/spotless-plugin-gradle/3.27.0/com/diffplug/gradle/spotless/FormatExtension.html)) like those above.  It also supports more powerful formatters:
+Spotless can check and apply formatting to any plain-text file, using simple rules ([javadoc](https://javadoc.io/static/com.diffplug.spotless/spotless-plugin-gradle/3.27.0/com/diffplug/gradle/spotless/FormatExtension.html)) like those above.  It also supports more powerful formatters:
 
 * Eclipse's [CDT](#eclipse-cdt) C/C++ code formatter
 * Eclipse's java code formatter (including style and import ordering)
@@ -607,7 +607,7 @@ spotless {
 }
 ```
 
-If you use `custom` or `customLazy`, you might want to take a look at [this javadoc](https://diffplug.github.io/spotless/javadoc/spotless-plugin-gradle/3.27.0/com/diffplug/gradle/spotless/FormatExtension.html#bumpThisNumberIfACustomStepChanges-int-) for a big performance win.
+If you use `custom` or `customLazy`, you might want to take a look at [this javadoc](https://javadoc.io/static/com.diffplug.spotless/spotless-plugin-gradle/3.27.0/com/diffplug/gradle/spotless/FormatExtension.html#bumpThisNumberIfACustomStepChanges-int-) for a big performance win.
 
 See [`JavaExtension.java`](src/main/java/com/diffplug/gradle/spotless/JavaExtension.java) if you'd like to see how a language-specific set of custom rules is implemented.  We'd love PR's which add support for other languages.
 

plugin-maven/README.md

@@ -3,7 +3,7 @@
 <!---freshmark shields
 output = [
   link(shield('Maven central', 'mavencentral', '{{group}}:{{artifactIdMaven}}', 'blue'), 'https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22{{group}}%22%20AND%20a%3A%22{{artifactIdMaven}}%22'),
-  link(shield('Javadoc', 'javadoc', '{{stableMaven}}', 'blue'), 'https://{{org}}.github.io/{{name}}/javadoc/{{artifactIdMaven}}/{{stableMaven}}/'),
+  link(shield('Javadoc', 'javadoc', '{{stableMaven}}', 'blue'), 'https://javadoc.io/doc/com.diffplug.spotless/spotless-maven-plugin/{{stableMaven}}/index.html'),
   '',
   link(shield('Changelog', 'changelog', '{{stableMaven}}', 'brightgreen'), 'CHANGES.md'),
   link(image('Travis CI', 'https://travis-ci.org/{{org}}/{{name}}.svg?branch=master'), 'https://travis-ci.org/{{org}}/{{name}}'),
@@ -12,7 +12,7 @@ output = [
   ].join('\n');
 -->
 [![Maven central](https://img.shields.io/badge/mavencentral-com.diffplug.spotless%3Aspotless--maven--plugin-blue.svg)](https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.diffplug.spotless%22%20AND%20a%3A%22spotless-maven-plugin%22)
-[![Javadoc](https://img.shields.io/badge/javadoc-1.27.0-blue.svg)](https://diffplug.github.io/spotless/javadoc/spotless-maven-plugin/1.27.0/)
+[![Javadoc](https://img.shields.io/badge/javadoc-1.27.0-blue.svg)](https://javadoc.io/doc/com.diffplug.spotless/spotless-maven-plugin/1.27.0/index.html)
 
 [![Changelog](https://img.shields.io/badge/changelog-1.27.0-brightgreen.svg)](CHANGES.md)
 [![Travis CI](https://travis-ci.org/diffplug/spotless.svg?branch=master)](https://travis-ci.org/diffplug/spotless)