Spelling mistakes in affidavit since 8db26fe

[georg-jung]

8db26fe updates the affidavit text, see also #432.

However, the new text is not an exact copy of the TU template. It contains some errors:

der TU Darmstadt selbtständig, ohne Hilfe Dritter

An s is missing in selbtständig.

The full stop . is missing at the end of the same sentence.

[TeXhackse]

Funny, because this was a copy+paste. Will fix it today.

[TeXhackse]

Thanks for the report, of course.

[georg-jung]

Thanks for the super fast fix!

[TeXhackse]

Thanks for the trial to provide a PR :) - just was bit too fast, so it's done asap. I will upload the release to CTAN in the evening, simply because there might be other reports in the TeXnical office hour today and I don't want to bother the CTAN team with 2 updates on a day.