Permalinks: Change mention of URI to URL in the description of `%category%` tag.

Props danieltj, tobifjellner.
Fixes #42147.
Built from https://develop.svn.wordpress.org/trunk@42023


git-svn-id: http://core.svn.wordpress.org/trunk@41857 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/options-permalink.php

@@ -231,7 +231,7 @@ $structures = array(
 					/* translators: %s: permalink structure tag */
 					'postname' => __( '%s (The sanitized post title (slug).)' ),
 					/* translators: %s: permalink structure tag */
-					'category' => __( '%s (Category slug. Nested sub-categories appear as nested directories in the URI.)' ),
+					'category' => __( '%s (Category slug. Nested sub-categories appear as nested directories in the URL.)' ),
 					/* translators: %s: permalink structure tag */
 					'author'   => __( '%s (A sanitized version of the author name.)' ),
 				);

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-beta4-42022';
+$wp_version = '4.9-beta4-42023';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.