Add documentation for new evolution fields

src/docs/evolution.json

@@ -112,6 +112,19 @@
       {
         "name": "EvolutionDetail",
         "fields": [
+          {
+            "name": "version_group_id",
+            "description": "The version group in which the evolution was introduced.",
+            "type": {
+              "type": "NamedAPIResource",
+              "of": "VersionGroup"
+            }
+          },
+          {
+            "name": "is_default",
+            "description": "Whether the evolution is considered as the expected evolution in a main series game. Each unique Pokémon variety of a line capable of evolution should have exactly one 'default' evolution. For example, the Meowth species has three default evolutions as there are three distinct varieties it can evolve into: Persian, Alolan Persian, and Perrserker.",
+            "type": "boolean"
+          },
           {
             "name": "item",
             "description": "The item required to cause evolution this into Pokémon species.",
@@ -255,6 +268,14 @@
               "of": "Pokemon"
             }
           },
+          {
+            "name": "evolved_form",
+            "description": "The form to which this evolution occurs.",
+            "type": {
+              "type": "NamedAPIResource",
+              "of": "Pokemon"
+            }
+          },
           {
             "name": "used_move",
             "description": "The move that must be used by the evolving Pokémon species during the evolution trigger event in order to evolve into this Pokémon species.",