Ok, I have changed the tag to pond

As Alex pointed out over here: changeset/47432399
I had made a mistake and added a white-space at the end of many wikidata/pedia tags. So, I'm editing the tags again to remove the extra white-space.

Hello Alex,
Thanks for the overpass tip. I noticed I had made the same mistake for a few wikidata-tags also. I'm working on fixing them now.
Vonter

changeset comment should be: fixed tags for towns

i fixed them manually. will do next ones in batches of 5 and check.