Lowercase the args tag when building the command XML

The args tag is always lowercase, while the command name is Capitalized or CamelCased

sucks/__init__.py

@@ -242,7 +242,7 @@ def wait_for_completion(self, bot):
     def to_xml(self):
         ctl = ET.Element('ctl', {'td': self.name})
         if self.args:
-            inner = ET.Element(self.name, self.args)
+            inner = ET.Element(self.name.lower(), self.args)
             ctl.append(inner)
         return ctl