fix UserFlags constant types (#937)

Only UserFlagDiscordEmployee had type UserFlags. All other constants
defined in the same block were untyped integer constants.

This change makes all UserFlags constants have type UserFlags. The
primary impact is that godoc and pkg.go.dev should render these
constants under the documentation for UserFlags, rather than under
package-level constants.

user.go

@@ -9,19 +9,19 @@ type UserFlags int
 // Valid UserFlags values
 const (
 	UserFlagDiscordEmployee           UserFlags = 1 << 0
-	UserFlagDiscordPartner                      = 1 << 1
-	UserFlagHypeSquadEvents                     = 1 << 2
-	UserFlagBugHunterLevel1                     = 1 << 3
-	UserFlagHouseBravery                        = 1 << 6
-	UserFlagHouseBrilliance                     = 1 << 7
-	UserFlagHouseBalance                        = 1 << 8
-	UserFlagEarlySupporter                      = 1 << 9
-	UserFlagTeamUser                            = 1 << 10
-	UserFlagSystem                              = 1 << 12
-	UserFlagBugHunterLevel2                     = 1 << 14
-	UserFlagVerifiedBot                         = 1 << 16
-	UserFlagVerifiedBotDeveloper                = 1 << 17
-	UserFlagDiscordCertifiedModerator           = 1 << 18
+	UserFlagDiscordPartner            UserFlags = 1 << 1
+	UserFlagHypeSquadEvents           UserFlags = 1 << 2
+	UserFlagBugHunterLevel1           UserFlags = 1 << 3
+	UserFlagHouseBravery              UserFlags = 1 << 6
+	UserFlagHouseBrilliance           UserFlags = 1 << 7
+	UserFlagHouseBalance              UserFlags = 1 << 8
+	UserFlagEarlySupporter            UserFlags = 1 << 9
+	UserFlagTeamUser                  UserFlags = 1 << 10
+	UserFlagSystem                    UserFlags = 1 << 12
+	UserFlagBugHunterLevel2           UserFlags = 1 << 14
+	UserFlagVerifiedBot               UserFlags = 1 << 16
+	UserFlagVerifiedBotDeveloper      UserFlags = 1 << 17
+	UserFlagDiscordCertifiedModerator UserFlags = 1 << 18
 )
 
 // A User stores all data for an individual Discord user.