fix spelling error2

Author: stepbystepcode

file_controller.h

@@ -10,7 +10,7 @@ void saveFile(const HttpRequestPtr &req, std::function<void(const HttpResponsePt
 void imageUpload(const HttpRequestPtr &req, std::function<void(const HttpResponsePtr &)> &&callback);
 void getPicture(const HttpRequestPtr &req, std::function<void(const HttpResponsePtr &)> &&callback);
 
-void commondsCtrl(const HttpRequestPtr &req, std::function<void(const HttpResponsePtr &)> &&callback);
+void commandsCtrl(const HttpRequestPtr &req, std::function<void(const HttpResponsePtr &)> &&callback);
 
 void add_lock(const HttpRequestPtr &req, std::function<void(const HttpResponsePtr &)> &&callback);