Too long rule number causes an Invalid Form Body error

[sentry]

Sentry Issue: BOT-1QT

HTTPException: 400 Bad Request (error code: 50035): Invalid Form Body
In content: Must be 2000 or fewer in length.
  File "discord/ext/commands/core.py", line 167, in wrapped
    ret = await coro(*args, **kwargs)
  File "bot/exts/info/site.py", line 129, in site_rules
    await ctx.send(f":x: Invalid rule indices: {invalid}")
  File "discord/abc.py", line 1422, in send
    data = await state.http.send_message(
  File "discord/http.py", line 335, in request
    raise HTTPException(response, data)

Error executing command invoked by [READCTED]: !rule 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...

[sentry]

Sentry issue: BOT-1QT

[ChrisLovering]

A fix for this would likely be to textwrap.shorten this line https://github.com/python-discord/bot/blob/main/bot/exts/info/site.py#L126 to something reasonable like 25/50 characters

[bsoyka]

@ChrisLovering I can take on this one. :)