Documentation: bonding: update miimon default to 100

With commit c1f897ce ("bonding: set default miimon value for non-arp
modes if not set") the miimon default was changed from zero to 100 if
arp_interval is also zero. Document this fact in bonding.rst.

Fixes: c1f897ce ("bonding: set default miimon value for non-arp modes if not set")
Signed-off-by: Jonathan Toppins <jtoppins@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/networking/bonding.rst

@@ -566,7 +566,8 @@ miimon
 	link monitoring.  A value of 100 is a good starting point.
 	The use_carrier option, below, affects how the link state is
 	determined.  See the High Availability section for additional
-	information.  The default value is 0.
+	information.  The default value is 100 if arp_interval is not
+	set.
 
 min_links