Documentation update. (openmaptiles#1654)

- Unifying `name_de` description for `mountain_peak` layer.
- Update the version of PostGIS for `generate-sqltomvt` function.

Makefile

@@ -289,7 +289,7 @@ ifeq (,$(wildcard build/sql/run_last.sql))
 	$(DOCKER_COMPOSE) run $(DC_OPTS) openmaptiles-tools bash -c \
 		'generate-sql $(TILESET_FILE) --dir ./build/sql \
 		&& generate-sqltomvt $(TILESET_FILE) \
-							 --key --gzip --postgis-ver 3.2.3 \
+							 --key --gzip --postgis-ver 3.3.4 \
 							 --function --fname=getmvt >> ./build/sql/run_last.sql'
 endif
 

layers/mountain_peak/mountain_peak.yaml

@@ -10,7 +10,7 @@ layer:
   fields:
     name: The OSM [`name`](http://wiki.openstreetmap.org/wiki/Key:name) value of the peak. Language-specific values are in `name:xx`.
     name_en: English name `name:en` if available, otherwise `name`. This is deprecated and will be removed in a future release in favor of `name:en`.
-    name_de: German name `name:de` if available, otherwise `name` or `name:en`.
+    name_de: German name `name:de` if available, otherwise `name` or `name:en`. This is deprecated and will be removed in a future release in favor of `name:de`.
     class:
       description: |
         Use the **class** to differentiate between natural objects.