Docs: Further improve documentation of known return types, plus other docs fixes.

See #48303


git-svn-id: https://develop.svn.wordpress.org/trunk@46661 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-image-editor.php

@@ -172,7 +172,12 @@ abstract class WP_Image_Editor {
 	 *
 	 * @since 3.5.0
 	 *
-	 * @return array {'width'=>int, 'height'=>int}
+	 * @return array {
+	 *     Dimensions of the image.
+	 *
+	 *     @type int $width  The image width.
+	 *     @type int $height The image height.
+	 * }
 	 */
 	public function get_size() {
 		return $this->size;