[html] Add charset and author `meta` to suggestions

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. -->  **Can this common uses added to list also like `meta:desc` and `meta:kw` was added?** `meta:charset` = `<meta charset="UTF-8">`{ **End cusrsor here** } `meta:auth` = `<meta name="author" content="`{ **End cusrsor here** }`">` --- **And here also one suggestion could improve Its end cursor position** `meta` expanded to `<meta>`{ **End cusrsor here** } it should be `<meta` { **End cusrsor here** }`>`