astmapper: Fix test error message (#9058)

Signed-off-by: Arve Knudsen <[email protected]>

pkg/frontend/querymiddleware/astmapper/parallel_test.go

@@ -233,7 +233,7 @@ func TestFunctionsWithDefaultsIsUpToDate(t *testing.T) {
 			}
 
 			// Rest of the functions with known defaults are functions with a default time() argument.
-			require.Containsf(t, FuncsWithDefaultTimeArg, name, "Function %q has variable arguments, and it's not in the list of functions with default time() argument.")
+			require.Containsf(t, FuncsWithDefaultTimeArg, name, "Function %q has variable arguments, and it's not in the list of functions with default time() argument.", f.Name)
 		})
 	}
 }