imprv logger err

packages/app/src/server/routes/page.js

@@ -1264,7 +1264,7 @@ module.exports = function(crowi, app) {
     }
     catch (err) {
       if (err instanceof PathAlreadyExistsError) {
-        logger.error('Page exists', err);
+        logger.error('Path already exists', err);
         return res.json(ApiResponse.error(err, 'already_exists', err.targetPath));
       }
       logger.error('Error occured while get setting', err);