fix typo in 2.2 release notes

Signed-off-by: Sam Kleinman <samk@10gen.com>
Readability improvements.

Signed-off-by: Sam Kleinman <samk@10gen.com>
Readability improvements.

Signed-off-by: Sam Kleinman <samk@10gen.com>
Balancer needs to be disabled

Backups must take place when the balancer is DISABLED.

Signed-off-by: Sam Kleinman <samk@10gen.com>