Fix place of worship string
Fix place of worship string

The category must be named "Places of worship", but individual items
without name should be named "Place of worship" and not "Places of
worship".

Signed-off-by: Thomas Petazzoni <a5d87d2bd7c424ee5cbdb4e978635bf653d5a005@free-electrons.com>

maposmatic/ocitysmap,dittaeva/ocitysmap,dittaeva/ocitysmap,ccnz/eqnz-ocitysmap,wonderchook/OcitySMaps,maposmatic/ocitysmap,maposmatic/ocitysmap