Merge branch 'geo/update-docs' into 'master'

Update Geo docs to reflect what is synced

[ci skip]

See merge request !1603

doc/gitlab-geo/configuration.md

@@ -250,6 +250,8 @@ Currently, this is what is synced:
 * Git repositories
 * Wikis
 * LFS objects
+* Issue, merge request, and comment attachments
+* User, group, and project avatars
 
 You can monitor the status of the syncing process on a secondary node
 by visiting the primary node's **Admin Area ➔ Geo Nodes** (`/admin/geo_nodes`)

doc/gitlab-geo/faq.md

@@ -12,12 +12,10 @@ manually [promote a secondary node](disaster-recovery.md) into primary.
 
 ## What data is replicated to a secondary node?
 
-We currently replicate project repositories, LFS objects and the whole
-database. This means user accounts, issues, merge requests, groups, project
-data, etc., will be available for query.
-We currently don't replicate user generated attachments / avatars or any
-other file in `public/upload`. We also don't replicate artifact data
-data (`shared/folder`).
+We currently replicate project repositories, LFS objects, generated
+attachments / avatars and the whole database. This means user accounts,
+issues, merge requests, groups, project data, etc., will be available for
+query. We currently don't replicate artifact data (`shared/folder`).
 
 ## Can I git push to a secondary node?