doc/dev: add Slack to Dev Guide essentials

Add Ceph's Slack to doc/developer_guide/essentials.rst.

Signed-off-by: Zac Dover <zac.dover@proton.me>
(cherry picked from commit c3288cf5be232bded5ccd70925da2452599903ab)

diff --git a/doc/dev/developer_guide/essentials.rst b/doc/dev/developer_guide/essentials.rst
index 2fe7a13cd449e65d54ff286e238aedcec0fcbbb6..30d9b1a4a9e890fb9efdbc7e63669da3fb93e677 100644 (file)
--- a/doc/dev/developer_guide/essentials.rst
+++ b/doc/dev/developer_guide/essentials.rst
@@ -89,6 +89,11 @@ click on `New issue`_.
 .. _`jump to the Ceph project`: http://tracker.ceph.com/projects/ceph
 .. _`New issue`: http://tracker.ceph.com/projects/ceph/issues/new
 
+Slack
+-----
+
+Ceph's Slack is https://ceph-storage.slack.com/.
+
 .. _mailing-list:
 
 Mailing lists