Docs: Update `@since` tag for `edit_post_{$post->post_type}` hook introduced in [43535].

Props garrett-eclipse.
Fixes #34706.
Built from https://develop.svn.wordpress.org/trunk@44347


git-svn-id: http://core.svn.wordpress.org/trunk@44177 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/post.php

@@ -3885,7 +3885,7 @@ function wp_insert_post( $postarr, $wp_error = false ) {
 		 * The dynamic portion of the hook name, `$post->post_type`, refers to
 		 * the post type slug.
 		 *
-		 * @since 4.9.9
+		 * @since 5.1.0
 		 *
 		 * @param int     $post_ID Post ID.
 		 * @param WP_Post $post    Post object.

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-alpha-44346';
+$wp_version = '5.1-alpha-44347';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.