Update german translation

car_maxspeed.json

@@ -1,6 +1,7 @@
 {
     "type": "overpass",
     "name": {
+        "de": "Höchstgeschwindigkeiten",
         "en": "Maxspeed"
     },
     "query": {

lang/de.json

@@ -6,7 +6,7 @@
     "category:buildings": "Gebäude",
     "category:car_amenities": "Einrichtungen",
     "category:car_furniture": "Straßenausstattung",
-    "category:car_maxspeed": null,
+    "category:car_maxspeed": "Höchstgeschwindigkeiten",
     "category:children": "Einrichtungen für Kinder",
     "category:communication": "Kommunikation",
     "category:construction": "Baustellen",
@@ -31,7 +31,7 @@
     "category:phone": "Telekommunikation",
     "category:places": "Orte",
     "category:places_geo": "Orte",
-    "category:playgrounds": null,
+    "category:playgrounds": "Spielplätze",
     "category:post": "Post",
     "category:power": "Energie",
     "category:pt_amenities": "Einrichtungen",
@@ -51,6 +51,6 @@
     "category:walk_amenities": "Einrichtungen",
     "category:waste": "Entsorgung",
     "category:water": "Gewässer",
-    "category:wikipedia": null,
+    "category:wikipedia": "Wikipedia",
     "category:works": "Fabriken"
 }

playgrounds.json

@@ -2,6 +2,7 @@
     "name": {
         "ast": "Xuegos infantiles",
         "cs": "Hřiště",
+        "de": "Spielplätze",
         "en": "Playground",
         "et": "Mänguväljak",
         "fr": "Jeux pour enfants",

wikipedia.json

@@ -1,6 +1,7 @@
 {
     "type": "overpass",
     "name": {
+        "de": "Wikipedia",
         "en": "Wikipedia"
     },
     "query": {