Clarify that non-maintainers can candidate as community manager

Only Gerrit maintainers can candidate for the ESC. By saying that the
nomination and election process for the ESC also applies to community
managers we made the impression that candidating as community manager is
also limited to Gerrit maintainers. This is not the case (e.g. one of
our current community managers is not a Gerrit maintainer). Update the
documentation to make it clear that anyone from the Gerrit community can
candidate as community manager.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I721063ca0d68372205d49a2f47992ee58bba4bb5
diff --git a/Documentation/dev-roles.txt b/Documentation/dev-roles.txt
index c16037e..2ca7f22 100644
--- a/Documentation/dev-roles.txt
+++ b/Documentation/dev-roles.txt
@@ -336,7 +336,10 @@
 steering committee members] at the same time so that they can represent
 the community without conflict of interest.
 
-Nomination process, election process and election period for the
+Anybody from the Gerrit community can candidate as community manager.
+This means, in contrast to candidating for the ESC, candidating as
+community manager is not limited to Gerrit maintainers. Otherwise the
+nomination process, election process and election period for the
 non-Google community manager are the same as for
 link:dev-processes.html#steering-committee-election[steering committee
 members].