Update germany.json

Updated and extended the German bandplan

root/res/bandplans/germany.json

@@ -2,7 +2,7 @@
     "name": "Germany",
     "country_name": "Germany",
     "country_code": "DE",
-    "author_name": "Johannes Kosfelder",
+    "author_name": "LEDFlighter",
     "author_url": "none",
     "bands": [
         {