Fix typo in a pydoc comment.

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/parkinglot@490 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/bindctl/command.py

@@ -20,7 +20,7 @@ NAME_PATTERN = re.compile("^\s*(?P<name>[\w]+)(?P<blank>\s*)(?P<others>.*)$")
 
 class BindCtlCmd:
     """ This class will parse the command line usr input into three part
-    module name, cmmand, parameters
+    module name, command, parameters
     the first two parts are strings and parameter is one hash, 
     parameter part is optional