Winged-Lucario said:

Oh my god, I'm sorry. I did it again. I didn't think it was possible so I tried to make it as best as I could. Why am I screwing up so much?! I'm not going to touch it anymore to stop doing this. If you want you can revert it again. I'm not going to touch it. I'm so sorry.

Heh, looks like you did from the tag history, but it didn't turn out to be a problem because I was doing some tag edits at the same time (with my description in its field), and submitting those probably overwrote your description again, so I didn't even notice.

Oh, and that tag history menu is where you can return everything to an earlier state by clicking on that set of tags and then clicking Revert to at the bottom.