Using an if block when {!event-filtering-additional-feature.md!}
is used implied that we plan to have this in all webhook doc .md
files.
But, it actually makes sense to only use this macro when the
webhook integration actually supports event filtering.
Reformatted Grafana doc into 3 part sections. One for
creating the Zulip bot and webhook URL. One for setting
up Grafana version 8.3 and above and the last one for
setting up Grafana version 8.2 and below.
Part of #29592.
Co-authored-by: Lauryn Menard <lauryn@zulip.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>