Bug 10671: correct minor issues in course reserves help

Bug 10671: correct minor issues in course reserves help

- fix a typo
- rename the help file for the course reserves home
  page so that it gets picked up when the user clicks
  the help link there.

To test:

[1] Go to the course reserves home page, then click on the
    "Help" link.  Verify that a help page with contents is
    displayed.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>