Add postAjax doc link.

Author: jaydons

documentation.md

@@ -80,6 +80,7 @@
 	- [Macro](/docs/{{package}}/{{version}}/html-builder-macro)
 	- [Ajax](/docs/{{package}}/{{version}}/html-builder-ajax)
 	- [Minified Ajax](/docs/{{package}}/{{version}}/html-builder-minified-ajax)
+	- [Post Ajax](/docs/{{package}}/{{version}}/html-builder-post-ajax)
 	- [Parameters](/docs/{{package}}/{{version}}/html-builder-parameters)
 	- [Events/Callbacks](/docs/{{package}}/{{version}}/html-builder-callbacks)
 	- [Add Action](/docs/{{package}}/{{version}}/html-builder-action)
@@ -106,4 +107,4 @@
 	- [Event Hooks](/docs/{{package}}/{{version}}/editor-events)
 	- [Usage](/docs/{{package}}/{{version}}/editor-usage)
 	- [Tutorial](/docs/{{package}}/{{version}}/editor-tutorial)
-	- [Github](https://github.com/yajra/laravel-datatables-editor)
+	- [Github](https://github.com/yajra/laravel-datatables-editor)