Fix a few mistakes in Wiegand encodings

[github-actions[bot]]

You are welcome to add an entry to the CHANGELOG.md as well

[iceman1001]

Nice catches..

interested in how you figured out the indala 27?

[jmichelp]

If I remember correctly, this one was discovered by ensuring that Decoding(Encoding(X)) = X :)

[iceman1001]

hm... Should make a regression test for that :) :)