small fixes

typo and help_method update

app/help_methods.py

@@ -45,7 +45,7 @@ def get_help_message(method):
         'wallpaper': [
             'Returns the URL for a 4k wallpaper. You can enter',
             'a search term as well, for example, !wallpaper, or',
-            ', !wallpaper flowers'
+            ', !wallpaper flowers. Supports multiple tags.'
             ]
     }
 

app/wallpaper.py

@@ -21,6 +21,6 @@ def get_wall(message):
     response = requests.get(url).url
 
     if 'photo-1446704477871-62a4972035cd' in response:
-        return "Could not find and image for those tags."
+        return "Could not find an image for those tags."
     else:
         return response