Update user.md

Co-authored-by: jackofallops <11830746+jackofallops@users.noreply.github.com>

docs/resources/user.md

@@ -42,7 +42,7 @@ The following arguments are supported:
 * `disable_strong_password` - (Optional) Whether the user is allowed weaker passwords than the default policy to be specified. Defaults to `false`.
 * `display_name` - (Required) The name to display in the address book for the user.
 * `division` - (Optional) The name of the division in which the user works.
-* `employee_hire_date` - The hire date of the user, formatted as an RFC3339 date string (e.g. `2018-01-01T01:02:03Z`).
+* `employee_hire_date` - (Optional) The hire date of the user, formatted as an RFC3339 date string (e.g. `2018-01-01T01:02:03Z`).
 * `employee_id` - (Optional) The employee identifier assigned to the user by the organisation.
 * `employee_type` - (Optional) Captures enterprise worker type. For example, Employee, Contractor, Consultant, or Vendor.
 * `fax_number` - (Optional) The fax number of the user.