Fix all internal JSDoc comments

If these are regular comments, then they won't appear in our d.ts files.
But, now we are relying on an external d.ts bundler to produce our final
merged, so they need to be present in the "input" d.ts files, meaning
they have to be JSDoc comments.

These comments only work today because all of our builds load their TS
files from scratch, so they see the actual source files and their
non-JSDoc comments.

The comments also need to be attached to a declaration, not floating,
otherwise they won't be used by api-extractor, so move them if needed.

src/webServer/webServer.ts

@@ -226,7 +226,7 @@ export function createWebSystem(host: WebHost, args: string[], getExecutingFileP
         // createSHA256Hash // telemetry of the project
 
         // Logging related
-        // /*@internal*/ bufferFrom?(input: string, encoding?: string): Buffer;
+        // /** @internal */ bufferFrom?(input: string, encoding?: string): Buffer;
         // gc?(): void;
         // getMemoryUsage?(): number;
     };