update birthday command description
@@ -182,7 +182,7 @@ func (c *Birthday) set(ctx *ken.SubCommandCtx) (err error) {
"The expected date format is `YYYY-MM-DD` or `MM-DD`. "+
"You can also use `/` or `.` as delimiters.\n\n"+
"You might also want to attach a timezone offset in the "+
- "format of `+TZ` (in hours after UTC eastern direction).", "").Error
+ "format of `[+-]TZ` (in hours offset of UTC).", "").Error
}
date, err := parseDate(matches[0], showYear)
if err == errYear {
