Bug 34351: Add link to access_url

Bug 34351: Add link to access_url

On k-t-d
1) Run bash <(curl -s https://raw.githubusercontent.com/ammopt/koha-ill-dev/master/start-ill-dev.sh)
2) Create a new Freeform request
3) Update access_url field. Run this mysql query:
update illrequests set accessurl = https://koha-community.org/;
4) Visit ill table list at /cgi-bin/koha/ill/ill-requests.pl
5) Verify access url is not clickable
6) Apply patch. Refresh. Verify it's now clickable.

Signed-off by: Jeremy Evans <Jeremy.Evans@ukhsa.gov.uk>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>