Docs: Correct @since tags introduced in WordPress 6.0.1.

The associated changes were backported to the 6.0 branch, so the version should be 6.0.1 instead of 6.1.0.

This affects:
* `@since` tag for the `block-templates` feature in `create_initial_theme_features()`.
* `@since` tag for the `show_on_front`, `page_on_front`, and `page_for_posts` options on the REST API settings endpoint.

Follow-up to [53590], [53661].

Props tommusrhodus, johnbillion.
Fixes #56225.
Built from https://develop.svn.wordpress.org/trunk@53704


git-svn-id: http://core.svn.wordpress.org/trunk@53263 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/theme.php

@@ -3804,7 +3804,7 @@ function _wp_keep_alive_customize_changeset_dependent_auto_drafts( $new_status,
  * See {@see 'setup_theme'}.
  *
  * @since 5.5.0
- * @since 6.1.0 The `block-templates` feature was added.
+ * @since 6.0.1 The `block-templates` feature was added.
  */
 function create_initial_theme_features() {
 	register_theme_feature(