docs: normalize Array format in READMEs (rollup#117)

Author: NotWoods

README.md

@@ -61,7 +61,7 @@ A [minimatch pattern](https://github.com/isaacs/minimatch), or array of patterns
 
 ### `include`
 
-Type: `String` | `Array(String)`<br>
+Type: `String` | `Array[...String]`<br>
 Default: `['**/*.svg', '**/*.png', '**/*.jpg', '**/*.gif']`
 
 A [minimatch pattern](https://github.com/isaacs/minimatch), or array of patterns, which specifies the files in the build the plugin should operate on. By default .svg, .png, .jpg, and .gif files are targeted.