They do it if there are multiple clubs of the same name. Like, "The Chess Club", or "Studying Chess Club", so they number them so that they're not all the same link and that they can be distinguished from each other
Bug: Chess.com link adding a "-1" to club names and news items

Greetings, Chess.com Beta Team! I couldn't help but notice that chess.com adds a "-1" to the link on club links and news items (as far as I know)
So any explanation would help. ( I gave two club photos to prove it's not only my club that's facing this:-
Club 1
Club 2
News Item
Regards,
ayrokx
Yes same for forums.
When someone creates (or created) a forum called "bug" for the millionth time, the link will be
https://www.chess.com/clubs/forum/view/bug-999999
Greetings, Chess.com Beta Team! I couldn't help but notice that chess.com adds a "-1" to the link on club links and news items (as far as I know)
So any explanation would help. ( I gave two club photos to prove it's not only my club that's facing this:-
News Item
Regards,
ayrokx