Update theme description strings to generics

app/src/main/assets/themes.json

@@ -7,26 +7,26 @@
   {
     "id": "1",
     "title": "Light",
-    "subtitle": "White UI must die, may slap on your face at night."
+    "subtitle": "Bright, suitable for daylight conditions"
   },
   {
     "id": "2",
     "title": "Dark",
-    "subtitle": "As dark as your humour, suitable for night-owls."
+    "subtitle": "Relatively dark theme, best for night owls"
   },
   {
     "id": "3",
     "title": "Pitch Black",
-    "subtitle": "The black, that matters."
+    "subtitle": "Black theme, best for AMOLED Displays"
   },
   {
     "id": "4",
     "title": "Dark-X",
-    "subtitle": "The dark, that looks cool?"
+    "subtitle": "Variant of dark theme"
   },
   {
     "id": "5",
-    "title": "Disskord",
+    "title": "Darkord",
     "subtitle": "Kanged from discord"
   }
 ]