Fix comment formatting.

dulwich/server.py

@@ -204,7 +204,8 @@ class ReceivePackHandler(Handler):
         # backend can now deal with this refs and read a pack using self.read
         self.backend.apply_pack(client_refs, self.proto.read)
 
-        # when we have read all the pack from the client, it assumes everything worked OK
+        # when we have read all the pack from the client, it assumes 
+        # everything worked OK.
         # there is NO ack from the server before it reports victory.