Bug 13177: Help page for Rotating Collections

Bug 13177: Help page for Rotating Collections

To test:

Go to Tools -> Rotating Collections and click Help in the top-right. Confirm the Help page shows and gives correct accurate instructions with no typos or grammatical errors.

Help displays as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Nicole Engard <nengard@bywatersolutions.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit b9e5aee1b66be893354733b6710b1df1b04edeb1)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>