Update logging

src/app.py

@@ -41,9 +41,10 @@ def safe():
             app.logger.info(f'Successfully resolved {website}')
             success += 1
         else:
-            app.logger.error(f'Unable to resolve {website}')
+            app.logger.info(f'Unable to resolve {website}')
 
     if success > 3:
+        app.logger.error('DNS is working, debug manually')
         return 'Error: DNS seems to be working, debug manually!'
 
     # Reboot router