added docs or fixed them

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

@@ -481,8 +481,6 @@ function wp_register_duotone_support( $block_type ) {
  * @since 6.1.0 Allow unset for preset colors.
  * @access private
  *
- * @deprecated 6.3.0 Use WP_Duotone::render_duotone_support() instead.
- *
  * @param string $block_content Rendered block content.
  * @param array  $block         Block object.
  * @deprecated    6.3.0          Use WP_Duotone::render_duotone_support() instead.

src/wp-includes/class-wp-duotone.php

@@ -444,7 +444,7 @@ private static function colord_parse( $input ) {
 	}
 
 	/**
-	 * Take the inline CSS duotone variable from a block and return the slug. Handles styles slugs like:
+	 * Takes the inline CSS duotone variable from a block and return the slug. Handles styles slugs like:
 	 * var:preset|duotone|blue-orange
 	 * var(--wp--preset--duotone--blue-orange)
 	 *
@@ -459,7 +459,7 @@ private static function get_slug_from_attribute( $duotone_attr ) {
 	}
 
 	/**
-	 * Check if we have a valid duotone preset.
+	 * Checks if we have a valid duotone preset.
 	 *
 	 * @param string $duotone_attr The duotone attribute from a block.
 	 * @return bool True if the duotone preset present and valid.

tests/phpunit/tests/block-supports/duotone.php

@@ -15,6 +15,11 @@ public static function wpTearDownAfterClass() {
 		WP_Style_Engine_CSS_Rules_Store::remove_all_stores();
 	}
 
+	/**
+	 * Tests whether the duotone preset class is added to the block.
+	 *
+	 * @covers ::render_duotone_support
+	 */
 	public function test_render_duotone_support_preset() {
 		$block         = array(
 			'blockName' => 'core/image',
@@ -25,6 +30,11 @@ public function test_render_duotone_support_preset() {
 		$this->assertSame( $expected, WP_Duotone::render_duotone_support( $block_content, $block ) );
 	}
 
+	/**
+	 * Tests whether the duotone unset class is added to the block.
+	 *
+	 * @covers ::render_duotone_support
+	 */
 	public function test_render_duotone_support_css() {
 		$block         = array(
 			'blockName' => 'core/image',
@@ -35,6 +45,11 @@ public function test_render_duotone_support_css() {
 		$this->assertMatchesRegularExpression( $expected, WP_Duotone::render_duotone_support( $block_content, $block ) );
 	}
 
+	/**
+	 * Tests whether the duotone custom class is added to the block.
+	 *
+	 * @covers ::render_duotone_support
+	 */
 	public function test_render_duotone_support_custom() {
 		$block         = array(
 			'blockName' => 'core/image',
@@ -60,7 +75,10 @@ public function data_get_slug_from_attribute() {
 	}
 
 	/**
+	 * Tests whether the slug is extracted from the attribute.
+	 * 
 	 * @dataProvider data_get_slug_from_attribute
+	 * @covers ::get_slug_from_attribute
 	 */
 	public function test_get_slug_from_attribute( $data_attr, $expected ) {