Change message to wait to stop mongod

Using the actual port rather than the admin web console, and include the thread: `[initandlisten]`

Signed-off-by: Sam Kleinman <samk@10gen.com>
Minor typo in word "and".

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-2745 Reference new split packages

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