man: Fix typo connnections -> connections

Signed-off-by: Ferenc Wágner <wferi@debian.org>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>

man/cmap_keys.8

@@ -315,7 +315,7 @@ at the time the request was made.
 .B active
 number of closed connections during whole runtime of corosync
 .B closed
-Total number of connnections that have been made since corosync was started
+Total number of connections that have been made since corosync was started
 
 .TP
 stats.ipcs.ID.*