[sdiq]

The Guardian changes to the Gaurdian then to the Grauniad and then, finally, the Guarrdian.

Innocent typos or there is some joke i missed.

Edit: as per other comments this seem to have been a joke.

[jameshart]

The Guardian used to have a reputation (deserved or not) for frequent typos. Private Eye (a satirical British magazine which has always taken a critical eye on the UK press) adopted the practice of always referring to The Guardian as The Grauniad as one of its many in-jokes, stylistic quirks, and running gags (see Eyes passim, ed.). As a result the nickname The Grauniad is a common epithet for The Guardian even if they no longer have any such reputation for typographical or copywriting errors.

[ttepasse]

Here highlighted in a nice letter to the editor:

https://twitter.com/arusbridger/status/1399300205925834753

[justincormack]

The Grauniad is an old Private Eye joke from when the Guardian had legendary poor quality control and typos, and its kind of stuck.