test: nil loc -> nil location

Author: kuafuRace

getter_test.go

@@ -12,7 +12,7 @@ func TestCarbon_StdTime(t *testing.T) {
 		assert.Equal(t, time.Time{}, NewCarbon().StdTime())
 	})
 
-	t.Run("nil loc", func(t *testing.T) {
+	t.Run("nil location", func(t *testing.T) {
 		c := Parse("2020-08-05").SetTimezone(PRC)
 		assert.Equal(t, "2020-08-05 08:00:00 +0800 CST", c.StdTime().String())
 		c.loc = nil