Bug 36005: Fixed typo in "Your concern was successfully submitted." text

Bug 36005: Fixed typo in "Your concern was successfully submitted." text

To test:

1. Turn on the syspref 'CatalogConcerns'

2. Go to view a record in the staff intranet and click on "New catalog concern" which is located in the "+New" dropdown.

3. Fill out the title on the form and leave everything else the same. Click on submit and notice that the message on the screen says "Your concern was sucessfully submitted."

4. Apply the patch.

5. Refresh the page and submit a new concern. Notice that the message now has "successfully" spelled correctly.

6. Sign off and have a wonderful day! :D

Signed-off-by: Brendan Lawlor <blawlor@clamsnet.org>
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>