Update db index for outgoing webhook

store/sql_webhook_store.go

@@ -40,7 +40,7 @@ func (s SqlWebhookStore) UpgradeSchemaIfNeeded() {
 func (s SqlWebhookStore) CreateIndexesIfNotExists() {
 	s.CreateIndexIfNotExists("idx_incoming_webhook_user_id", "IncomingWebhooks", "UserId")
 	s.CreateIndexIfNotExists("idx_incoming_webhook_team_id", "IncomingWebhooks", "TeamId")
-	s.CreateIndexIfNotExists("idx_outgoing_webhook_channel_id", "OutgoingWebhooks", "ChannelId")
+	s.CreateIndexIfNotExists("idx_outgoing_webhook_team_id", "OutgoingWebhooks", "TeamId")
 }
 
 func (s SqlWebhookStore) SaveIncoming(webhook *model.IncomingWebhook) StoreChannel {