Since the setup for uptimerobot does not deviate from what we have in
the "create-bot-construct-url" macro, we can reuse it and event
filtering instructions for uptimerobot will be automatically included.
TODO: Add event filtering documentation for buildbot when it supports
custom endpoint URL.
Signed-off-by: Zixuan James Li <p359101898@gmail.com>
markdown-include is GPL licensed.
Also, rewrite it as a block processor, so that it works correctly
inside indented blocks.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Note that the documentation cannot fully use our macros, because
Uptime Robot requires an & of the end of the URL, because of how it
passes its payload.
Fixes#13854. Fixes#13939.