node: all golint warnings fixed (#16773)

* node: all golint warnings fixed

* node: rm per peter

* node: rm per peter

node/api.go

@@ -217,7 +217,7 @@ func (api *PrivateAdminAPI) StartWS(host *string, port *int, allowedOrigins *str
 	return true, nil
 }
 
-// StopRPC terminates an already running websocket RPC API endpoint.
+// StopWS terminates an already running websocket RPC API endpoint.
 func (api *PrivateAdminAPI) StopWS() (bool, error) {
 	api.node.lock.Lock()
 	defer api.node.lock.Unlock()