fix: comment typo (#27388)

fix a typo in the comment

Author: Equationzhao

models/user/user.go

@@ -42,7 +42,7 @@ const (
 	// UserTypeOrganization defines an organization
 	UserTypeOrganization
 
-	// UserTypeReserved reserves a (non-existing) user, i.e. to prevent a spam user from re-registering after being deleted, or to reserve the name until the user is actually created later on
+	// UserTypeUserReserved reserves a (non-existing) user, i.e. to prevent a spam user from re-registering after being deleted, or to reserve the name until the user is actually created later on
 	UserTypeUserReserved
 
 	// UserTypeOrganizationReserved reserves a (non-existing) organization, to be used in combination with UserTypeUserReserved