Improve consistency of comment quoting and differentiate types of double quotes

Author: sirreal

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

@@ -3814,9 +3814,9 @@ public function set_modifiable_text( string $plaintext_content ): bool {
 				/*
 				 * SCRIPT tag contents can be dangerous.
 				 *
-				 * The text `</script>` could close the SCRIPT element prematurely.
+				 * The text "</script>" could close the SCRIPT element prematurely.
 				 *
-				 * The text `<script>` could enter the "script data double escaped state", preventing the
+				 * The text "<script>" could enter the “script data double escaped state”, preventing the
 				 * SCRIPT element from closing as expected, for example:
 				 *
 				 *     <script>