reduce edition requirement for keyword test

tshepang · tshepang · commit c653d60fe6bd · 2025-10-03T14:38:27.000+02:00
Also, add Reference ids
diff --git a/tests/ui/keyword/soup.rs b/tests/ui/keyword/soup.rs
@@ -1,5 +1,7 @@
-//@ edition:2024
 //@ check-pass
+//@ edition: 2018..
+//@ reference: lex.keywords.strict
+//@ reference: lex.keywords.weak
 
 #![allow(unused_imports)]
 #![allow(missing_abi)]
