[trivial] fix indentation for ArgsManager class

src/util.h

@@ -187,6 +187,7 @@ public:
     void ParseParameters(int argc, const char*const argv[]);
     void ReadConfigFile(const std::string& confPath);
     std::vector<std::string> GetArgs(const std::string& strArg);
+
     /**
      * Return true if the given argument has been manually set
      *