man page: Improve description of token timeout

With introduction of token_coefficient, token timeout defined in
configuration file may be no longer reflect real token timeout, what may
be confusing.

Enhanced description hopefully fix that.

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Christine Caulfield <ccaulfie@redhat.com>

man/corosync.conf.5

@@ -280,11 +280,17 @@ by reducing the token timeout.
 
 .TP
 token
-This timeout specifies in milliseconds until a token loss is declared after not
+This timeout is used directly or as a base for real token timeout calculation (explained in
+.B token_coefficient
+section). Token timeout specifies in milliseconds until a token loss is declared after not
 receiving a token.  This is the time spent detecting a failure of a processor
 in the current configuration.  Reforming a new configuration takes about 50
 milliseconds in addition to this timeout.
 
+For real token timeout used by totem it's possible to read cmap value of
+.B runtime.config.token
+key.
+
 The default is 1000 milliseconds.
 
 .TP