Changed constants name MIN_TEAM_LENGTH value to 2 and the error message (#4149)

webapp/utils/constants.jsx

@@ -808,8 +808,8 @@ export const Constants = {
     WEBRTC_TIME_DELAY: 750,
     WEBRTC_CLEAR_ERROR_DELAY: 15000,
     DEFAULT_MAX_USERS_PER_TEAM: 50,
+    MIN_TEAMNAME_LENGTH: 2,
     DEFAULT_MAX_CHANNELS_PER_TEAM: 2000,
-    MIN_TEAMNAME_LENGTH: 4,
     MAX_TEAMNAME_LENGTH: 15,
     MIN_USERNAME_LENGTH: 3,
     MAX_USERNAME_LENGTH: 22,