Bug 37071: Updated the purchase suggestions link

Bug 37071: Updated the purchase suggestions link

To test:
1. Go to a patron account and click on “New purchase suggestion” under the “Purchase Suggestions” tab.
    1. Clicking on the button will take you to the suggestions management page.
2. Apply the patch.
3. Go back to the patron account and click on the “New purchase suggestion” link again. This time it will take you to the purchase suggestion form. You are now able to successfully submit a purchase suggestion.
4. Sign off and have an amazing day. :D

Signed-off-by: Sam Lau <samalau@gmail.com>
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>
Signed-off-by: Emily Lamancusa <emily.lamancusa@montgomerycountymd.gov>
(cherry picked from commit a7484ed7598a6c1263dc5b205e3570f943bbcd60)
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit dc92d3aebd0a7cde5c7c9ed7aa8df744e9e1066f)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>