Documents the addition of "channel" and "channels" as operators for
search/narrow filters, noting that they are aliases of the "stream"
and "streams" operators.
This change does not yet deprecate the "stream" and "streams"
operators.
Part of stream to channel rename project.
Adds a tip to the section on webhook URLs in the incoming webhook
overview and to the section on stream and user IDs in the construct
a narrow documentation. The tip links to relevant articles in the
help center.
Part of work on #19067.
Expands support for the message ID operand for id" operator to be either
a string or an integer. Previously, this operand was always validated as
a string.
Documents narrows now have support for new filters for direct messages:
`is:dm`, `dm`, and `dm-including`. Also documents that `is:private`,
`pm-with` and `group-pm-with` are now legacy aliases for these three
new filters respectively.
Note that API documentation references the help center documentation
for search/narrow filters.
Fixes#24806.
- Updates `.prettierignore` for the new directory.
- Updates any reference to the API documentation directory for
markdown files to be `api_docs/` instead of `zerver/api/`.
- Removes a reference link from `docs/documentation/api.md` that
hasn't referenced anything in the text since commit 0542c60.
- Update rendering of API documentation for new directory.
