Update guide_writefreely.rst

[thisven]

Changed author contact

[thisven]

I also corrected some typos.

[noave]

thanks, could you please rework the commit messages regarding our style guide: https://github.com/Uberspace/lab/blob/main/STYLE.md#add-your-changes-to-the-uberspace-lab :slightly_smiling_face:

see here: https://docs.github.com/en/pull-requests/committing-changes-to-your-project/creating-and-editing-commits/changing-a-commit-message at Changing the message of older or multiple commit messages

[thisven]

Hopefully I've managed the renaming of at least the last commit. :blush: