Use ascii ' instead unicode ‘’

Libs/Core/ctkErrorLogAbstractMessageHandler.cpp

@@ -37,7 +37,7 @@ public:
   QString                     HandlerPrettyName;
 
   // Use "int" instead of "ctkErrorLogModel::TerminalOutput" to avoid compilation warning ...
-  // qhash.h:879: warning: passing ‘ctkErrorLogModel::TerminalOutput’ chooses ‘int’ over ‘uint’ [-Wsign-promo]
+  // qhash.h:879: warning: passing 'ctkErrorLogModel::TerminalOutput' chooses 'int' over 'uint' [-Wsign-promo]
   QHash<int, ctkErrorLogTerminalOutput*> TerminalOutputs;
 };