Remove executable permission from docs

`doc/user/admin_area/img/index_runners_search_or_filter.png` does not need x permissions.

Remove executable permission from docs
`doc/user/admin_area/img/index_runners_search_or_filter.png` does not need x permissions.
6e19889a · Bob Van Landuyt · d9a761ed · 6e19889a
Commit 6e19889a authored Jun 05, 2019 by Bob Van Landuyt
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