i18n(voice): tighten the geometry translations after a second review

- keep inserted place names clear of prepositions and articles they
  would need in fr, pt, ru and uk
- use each catalog's own terms: punto de interés, trazar contorno,
  Buscando, 加載/匹配/搜索 and full-width colons in ja
- list the Italian "Area" as intentionally the same as English

src/i18n/locales/de.json

@@ -2946,7 +2946,7 @@
   "Directions, drawing and your own files": "Route, Zeichnen und eigene Dateien",
   "Voice place search (needs an Overpass server)": "Sprachgesteuerte Ortssuche (benötigt einen Overpass-Server)",
   "OSM Places": "OSM-Orte",
-  "state or province": "Bundesland oder Provinz",
+  "state or province": "Bundesstaat oder Provinz",
   "county or district": "Landkreis oder Bezirk",
   "neighbourhood": "Stadtviertel",
   "natural region": "Naturraum",
@@ -2971,7 +2971,7 @@
   "{count} {kind}": "{kind}: {count}",
   "In {area}": "Gebiet: {area}",
   "Area around {place}": "Gebiet um {place}",
-  "Area around landmark": "Gebiet um Wahrzeichen",
+  "Area around landmark": "Gebiet um ein Wahrzeichen",
   "Outline {place}": "{place} umreißen",
   "Outline area": "Gebiet umreißen",
   "Find {place}": "{place} finden",