Update user.mdx

I believe a user leaving a guild also returns ``false``, I could it add it but it may be really lengthy then.

Also, let me know if what I provided have exceptions or are just entirely wrong.

Author: Sacul0457

docs/resources/user.mdx

@@ -119,12 +119,12 @@ Premium types denote the level of premium a user has. Visit the [Nitro](https://
 
 ###### User Primary Guild
 
-| Field             | Type       | Description                                                                                                                                                                                             |
-|-------------------|------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| identity_guild_id | ?snowflake | the id of the user's primary guild                                                                                                                                                                      |
-| identity_enabled  | ?boolean   | whether the user is displaying the primary guild's server tag. This can be ``null`` if the system clears the identity, e.g. because the server no longer supports tags. This rarely returns ``false``. |
-| tag               | ?string    | the text of the user's server tag. Limited to 4 characters                                                                                                                                              |
-| badge             | ?string    | the [server tag badge hash](/docs/reference#image-formatting)                                                                                                                                           |
+| Field             | Type       | Description                                                                                                                                                                                                                      |
+|-------------------|------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| identity_guild_id | ?snowflake | the id of the user's primary guild                                                                                                                                                                                               |
+| identity_enabled  | ?boolean   | whether the user is displaying the primary guild's server tag. This can be ``null`` if the system clears the identity, e.g. the server no longer supports tags. This can be ``false``, e.g. the user manually removes their tag. |
+| tag               | ?string    | the text of the user's server tag. Limited to 4 characters                                                                                                                                                                       |
+| badge             | ?string    | the [server tag badge hash](/docs/reference#image-formatting)                                                                                                                                                                    |
 
 ### Avatar Decoration Data Object