Bug 22527: web installer links to outdated DB manual

Bug 22527: web installer links to outdated DB manual

To reproduce:
1. Use MySQL or MariaDB for your Koha installation
2. Create an empty database and point $KOHA_CONF to this database name.
3. Grant SELECT privilege to your database user, e.g.
grant select on koha3.* to 'koha'@'%' identified by 'koha';
4. Go to step 2 of web installer where it checks database
connection
5. Observe the following message

     User koha doesn't have enough privilege on database koha.

     Ask for or make a change in the user's privileges. User koha must
     have USAGE, INSERT, UPDATE, DELETE, DROP and CREATE privileges on
     database koha2.

     Need help? See manual for PostgreSQL

6. Note "See manual for PostgreSQL" is wrong. Should now read Need help?
For help with granting permissions, please search online for "[%
dbms %] manual grant permissions" of course the dbms should be the dbms
you are using.
7. Apply patch, restart all
8. Refresh page and observe it now displays correct link

Test plan and original patchset by Lari Taskula <lari.taskula@hypernova.fi>

Sponsored-by: Hypernova Oy
Signed-off-by: Hayley Mapley <hayleymapley@catalyst.net.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Bug 22527: Remove extra space after '?'

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>