added absolute path to a link

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-430: The load() command should be documented for the mongo shell

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-430: edits
Minor: fixes duplicated terms

Signed-off-by: Sam Kleinman <samk@10gen.com>
Starting w/2.4 _secondaryThrottle is on by default

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