Add FIXME for linkchecker whitlists

Author: mitaa

src/tools/linkchecker/main.rs

@@ -133,8 +133,11 @@ fn check(cache: &mut Cache,
     // Unfortunately we're not 100% full of valid links today to we need a few
     // whitelists to get this past `make check` today.
     // FIXME(#32129)
-    if file.ends_with("std/string/struct.String.html") ||
-       file.ends_with("collections/string/struct.String.html") {
+    if file.ends_with("std/string/struct.String.html") {
+        return None;
+    }
+    // FIXME(#32553)
+    if file.ends_with("collections/string/struct.String.html") {
         return None;
     }
     // FIXME(#32130)