add Doctor to the default roles

client/src/config/defaultRoles.js

@@ -34,6 +34,12 @@ export const defaultRoles = [
         team: 'good',
         description: 'Each night, learn if a chosen person is a Werewolf.'
     },
+    {
+        role: 'Doctor',
+        team: 'good',
+        description: `Each night, choose a player to protect from the Werewolves. This can be yourself. If the Werewolves
+        target this person, they still survive to the following day.`
+    },
     {
         role: 'Parity Hunter',
         team: 'good',