[Docs] add function revision + format changes to other-functions

[Blargian]

Closes #2004 as part of the functions project.

Adds:

• missing revision function to the other-functions page.

Updates to other-functions.md:

For various functions:

• replace function names like eg. host() with host and place host() as part of the syntax (add if missing).
• In some places the result has Type: , add the type in-line to better standardise formatting.
• add headings if they are missing (eg. there is an example but it's not under the heading "example")

Updates above are not-exhaustive, there are a lot of issues with this page still...

Changelog category (leave one):

• Documentation (changelog entry is not required)

[robot-clickhouse]

This is an automated comment for commit 508b035 with description of existing statuses. It's updated for the latest CI running

❌ Click here to open a full report in a separate page

Check name	Description	Status
A Sync	There's no description for the check yet, please add it to tests/ci/ci_config.py:CHECK_DESCRIPTIONS	⏳ pending
Mergeable Check	Checks if all other necessary checks are successful	❌ failure

Successful checks

Check name	Description	Status
CI running	A meta-check that indicates the running CI. Normally, it's in success or pending state. The failed status indicates some problems with the PR	✅ success
Docs check	Builds and tests the documentation	✅ success
PR Check	There's no description for the check yet, please add it to tests/ci/ci_config.py:CHECK_DESCRIPTIONS	✅ success
Style check	Runs a set of checks to keep the code style clean. If some of tests failed, see the related log from the report	✅ success

[rschu1ze]

Merge conflict 😢