refacor media widget, apply clang format rule

include/helpers/system.hpp

@@ -10,7 +10,7 @@ class SystemHelper {
             throw std::runtime_error("Could not open file: " + filePath);
         }
         std::string content((std::istreambuf_iterator<char>(file)),
-                             std::istreambuf_iterator<char>());
+                            std::istreambuf_iterator<char>());
         file.close();
         return content;
     }