Update FIXME comment

Co-authored-by: Wesley Wiser <[email protected]>

Author: rylev

src/test/debuginfo/no_mangle-info.rs

@@ -27,7 +27,7 @@
 #[no_mangle]
 pub static TEST: u64 = 0xdeadbeef;
 
-// FIXME: uncommenting this namespace breaks the test, and we're not sure why
+// FIXME(rylev, wesleywiser): uncommenting this item breaks the test, and we're not sure why
 // pub static OTHER_TEST: u64 = 43;
 pub mod namespace {
     pub static OTHER_TEST: u64 = 42;