Remove baseurl usage

[paoloredis]

The baseurl shortcode has been removed and all of its usages replaced with relref.

[github-actions]

Staging links:
https://redis.io/docs/staging/DOC-4960/commands/acl-setuser/
https://redis.io/docs/staging/DOC-4960/commands/bf.add/
https://redis.io/docs/staging/DOC-4960/commands/bf.exists/
https://redis.io/docs/staging/DOC-4960/commands/bf.insert/
https://redis.io/docs/staging/DOC-4960/commands/bf.loadchunk/
https://redis.io/docs/staging/DOC-4960/commands/bf.madd/
https://redis.io/docs/staging/DOC-4960/commands/bf.mexists/
https://redis.io/docs/staging/DOC-4960/commands/bf.scandump/
https://redis.io/docs/staging/DOC-4960/commands/cf.add/
https://redis.io/docs/staging/DOC-4960/commands/cf.addnx/
https://redis.io/docs/staging/DOC-4960/commands/cf.count/
https://redis.io/docs/staging/DOC-4960/commands/cf.exists/
https://redis.io/docs/staging/DOC-4960/commands/cf.insert/
https://redis.io/docs/staging/DOC-4960/commands/cf.insertnx/
https://redis.io/docs/staging/DOC-4960/commands/cf.loadchunk/
https://redis.io/docs/staging/DOC-4960/commands/cf.mexists/
https://redis.io/docs/staging/DOC-4960/commands/cf.scandump/
https://redis.io/docs/staging/DOC-4960/commands/command-getkeys/
https://redis.io/docs/staging/DOC-4960/commands/command-getkeysandflags/
https://redis.io/docs/staging/DOC-4960/commands/command-list/
https://redis.io/docs/staging/DOC-4960/commands/eval/
https://redis.io/docs/staging/DOC-4960/commands/eval_ro/
https://redis.io/docs/staging/DOC-4960/commands/evalsha_ro/
https://redis.io/docs/staging/DOC-4960/commands/fcall_ro/
https://redis.io/docs/staging/DOC-4960/commands/ft.aggregate/
https://redis.io/docs/staging/DOC-4960/commands/ft.aliasadd/
https://redis.io/docs/staging/DOC-4960/commands/ft.aliasdel/
https://redis.io/docs/staging/DOC-4960/commands/ft.aliasupdate/
https://redis.io/docs/staging/DOC-4960/commands/ft.alter/

[dwdougherty]

I didn't scrutinize every single change, but I scanned a lot of them. LGTM.