Update test with different ambiguity resolution

grammar_test/ambiguities.txt

@@ -30,4 +30,6 @@ int main() {
   (identifier)
   (function_declarator (identifier))
   (compound_statement
-    (declaration (template_call (identifier) (identifier)) (init_declarator (identifier) (number_literal))))))
+    (declaration
+      (template_call (identifier) (type_name (identifier)))
+      (init_declarator (identifier) (number_literal))))))