Enable & fix typecheck for several languages (#8906)

Co-authored-by: fisker <lionkay@gmail.com>

src/document/doc-builders.js

@@ -56,7 +56,7 @@ function indent(contents) {
 }
 
 /**
- * @param {number} n
+ * @param {number | string} n
  * @param {Doc} contents
  * @returns Doc
  */

tsconfig.json

@@ -23,12 +23,8 @@
     "src/main/multiparser.js",
     "src/main/options.js",
     // [TBD] src/language-* source directory trees with known JSDoc type issues:
-    "src/language-css",
-    "src/language-graphql",
     "src/language-html",
     "src/language-js",
-    "src/language-markdown",
-    "src/language-yaml",
     // [TBD] JavaScript sources affected by JSDoc issues in src/language-*:
     "src/common/load-plugins.js",
     "src/cli/index.js",