Docs: Use proper case for @todo tags.

The correct tag is `@todo`, not `@TODO` or `@todo:` (note the trailing colon).

Reference: [https://developer.wordpress.org/coding-standards/inline-documentation-standards/php/#phpdoc-tags PHP Documentation Standards: PHPDoc tags].

Follow-up to [55203], [56274], [56565], [56698].

Props jrf.
See #59651.

git-svn-id: https://develop.svn.wordpress.org/trunk@57077 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/block-supports/layout.php

@@ -796,12 +796,12 @@ function wp_render_layout_support_flag( $block_content, $block ) {
 	 * are still present in the wrapper as they are in this example. Frequently, additional classes
 	 * will also be present; rarely should classes be removed.
 	 *
-	 * @TODO: Find a better way to match the first inner block. If it's possible to identify where the
-	 *        first inner block starts, then it will be possible to find the last tag before it starts
-	 *        and then that tag, if an opening tag, can be solidly identified as a wrapping element.
-	 *        Can some unique value or class or ID be added to the inner blocks when they process
-	 *        so that they can be extracted here safely without guessing? Can the block rendering function
-	 *        return information about where the rendered inner blocks start?
+	 * @todo Find a better way to match the first inner block. If it's possible to identify where the
+	 *       first inner block starts, then it will be possible to find the last tag before it starts
+	 *       and then that tag, if an opening tag, can be solidly identified as a wrapping element.
+	 *       Can some unique value or class or ID be added to the inner blocks when they process
+	 *       so that they can be extracted here safely without guessing? Can the block rendering function
+	 *       return information about where the rendered inner blocks start?
 	 *
 	 * @var string|null
 	 */

src/wp-includes/html-api/class-wp-html-processor.php

@@ -342,7 +342,7 @@ public function get_last_error() {
 	/**
 	 * Finds the next tag matching the $query.
 	 *
-	 * @TODO: Support matching the class name and tag name.
+	 * @todo Support matching the class name and tag name.
 	 *
 	 * @since 6.4.0
 	 *
@@ -551,9 +551,9 @@ public function step( $node_to_process = self::PROCESS_NEXT_NODE ) {
 	 * Breadcrumbs start at the outermost parent and descend toward the matched element.
 	 * They always include the entire path from the root HTML node to the matched element.
 	 *
-	 * @TODO: It could be more efficient to expose a generator-based version of this function
-	 *        to avoid creating the array copy on tag iteration. If this is done, it would likely
-	 *        be more useful to walk up the stack when yielding instead of starting at the top.
+	 * @todo It could be more efficient to expose a generator-based version of this function
+	 *       to avoid creating the array copy on tag iteration. If this is done, it would likely
+	 *       be more useful to walk up the stack when yielding instead of starting at the top.
 	 *
 	 * Example
 	 *

src/wp-includes/html-api/class-wp-html-tag-processor.php

@@ -2031,8 +2031,8 @@ public function set_attribute( $name, $value ) {
 		 *
 		 * @see https://html.spec.whatwg.org/#attributes-2
 		 *
-		 * @TODO as the only regex pattern maybe we should take it out? are
-		 *       Unicode patterns available broadly in Core?
+		 * @todo As the only regex pattern maybe we should take it out?
+		 *       Are Unicode patterns available broadly in Core?
 		 */
 		if ( preg_match(
 			'~[' .