Bug 24863: QueryFuzzy syspref says it requires Zebra but ElasticSearch has some support.

Bug 24863: QueryFuzzy syspref says it requires Zebra but ElasticSearch has some support.

This patch updates the description of the QueryFuzzy system preference
to make it more clear how it works with Zebra and how Elasticsearch has
some amount of fuzzy available for searches.

To test:
1. Go to administration
2. Search for QueryFuzzy
3. Observe the current description, which only includes Zebra.
4. Apply patch
5. Repeat steps 1-2
6. Observe the updated description.
7. Sign off

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>