DOC: remove okwarning from scale guide
- [ ] closes #29960
- [ ] All [code checks passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit).
- [ ] Added [type annotations](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#type-hints) to new arguments/methods/functions.
- [ ] Updating an entry in the latest `doc/source/user_guide/scale.rst`

lgtm. want to move it out of draft status? thx @seanjedi 