HTML API: Fix wrong @SInCE tag.

When the remaining insertion modes were stubbed in the HTML Processor,
a `@since` tag was mistakenly copied with 6.4.0 instead of 6.7.0.

This patch fixes the invalid tag.

Discussed in https://core.trac.wordpress.org/ticket/61576

Follow-up to [58679].

Props tobiasbg.
See #61576.


git-svn-id: https://develop.svn.wordpress.org/trunk@58680 602fd350-edb4-49c9-b593-d223f7449a82

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

@@ -50,7 +50,7 @@ class WP_HTML_Processor_State {
 	/**
 	 * Before HTML insertion mode for full HTML parser.
 	 *
-	 * @since 6.4.0
+	 * @since 6.7.0
 	 *
 	 * @see https://html.spec.whatwg.org/#the-before-html-insertion-mode
 	 * @see WP_HTML_Processor_State::$insertion_mode