tools: make internal link checker more robust

The internal link checker was missing some broken links because it was
being too restrictive about the characters it accepted as part of a link
hash. Accept anything that isn't a terminating quotation mark.
Refs: #39426
Refs: #39425
PR-URL: #39429
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Zeyu Yang <himself65@outlook.com>

Author: Trott

tools/doc/allhtml.mjs

@@ -76,13 +76,13 @@ fs.writeFileSync(new URL('./all.html', source), all, 'utf8');
 
 // Validate all hrefs have a target.
 constids=newSet();
-constidRe=/id="(\w+)"/g;
+constidRe=/id="([^"]+)"/g;
 letmatch;
 while(match=idRe.exec(all)){
 ids.add(match[1]);
 }
 
-consthrefRe=/href="#(\w+)"/g;
+consthrefRe=/href="#([^"]+)"/g;
 while(match=hrefRe.exec(all)){
 if(!ids.has(match[1]))thrownewError(`link not found: ${match[1]}`);
 }