Where do I report type-o errors on the web/man pages?

Where do I report errors on the web pages? Type-o's and such.

The page in question is:
https://help.launchpad.net/YourAccount/CreatingAnSSHKeyPair
"You can safely use on SSH key per client machine to connect to multiple hosts."
should read:
"You can safely use one SSH key per client machine to connect to multiple hosts."

"on" vs. "one"

I know it seems like a little thing, but I've been reading a *lot* of documentation on Ubuntu recently, and most of it is dated or written by the person who wrote the software, that is, someone who already knows how it works.

I don't mind helping to clean it up, but I need to know where to send the changes.

Thanks!
-Erik