Documentation update for python (fetch)

[alexmealing-01]

Just a small request to update some Python SDK documentation - as a database newbie I got stuck on this for a few hours

Under the Python fetch / pagination / range docs, I recommend you explicitly add a reference to using order('id') as not using this will trip up users who don't realise that databases don't return rows in a pre-defined order (like myself)

https://supabase.com/docs/reference/python/select