Coding Standards: Rename the $cat_ID argument to $cat_id in `get_…

…the_category_by_ID()`.

This fixes a `Variable "$cat_ID" is not in valid snake_case format` WPCS warning.

Props azouamauriac.
See #54728.

git-svn-id: https://develop.svn.wordpress.org/trunk@52958 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/category-template.php

@@ -103,12 +103,12 @@ function get_the_category( $post_id = false ) {
  *
  * @since 0.71
  *
- * @param int $cat_ID Category ID.
+ * @param int $cat_id Category ID.
  * @return string|WP_Error Category name on success, WP_Error on failure.
  */
-function get_the_category_by_ID( $cat_ID ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
-	$cat_ID   = (int) $cat_ID;
-	$category = get_term( $cat_ID );
+function get_the_category_by_ID( $cat_id ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
+	$cat_id   = (int) $cat_id;
+	$category = get_term( $cat_id );
 
 	if ( is_wp_error( $category ) ) {
 		return $category;