Bug 32213: Reindent item search fields templates

Bug 32213: Reindent item search fields templates

This patch reindents three item search field templates so that they have
consistent indentation.

To test, apply the patch and go to Administration -> Item search fields.

Test all aspects of viewing, adding, and deleting item search fields.
Everything should look correct and work correctly.

Signed-off-by: David <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Edit: changed intendation on a tiny bit
(cherry picked from commit 3381a6463cad9300bae89384fd47749a9887a0c7)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>