Remove editorial 'Match upstream' comment — belongs in PR description, not code

Author: johanrd

lib/rules/template-no-invalid-link-text.js

@@ -145,9 +145,7 @@ module.exports = {
         return;
       }
 
-      // Match upstream: if the link contains any non-TextNode child (component,
-      // mustache, sub/block expression), the content is dynamic/opaque — don't flag.
-      // See upstream no-invalid-link-text.js L53-56.
+      // If the link contains any non-TextNode child, content is dynamic/opaque — don't flag.
       const childList = children || [];
       const allTextNodes = childList.every((child) => child.type === 'GlimmerTextNode');
       if (!allTextNodes) {