Replace all instances of "categorie" with "category" (#340)

source/plugins/people/metadata.yml

@@ -1,6 +1,6 @@
 name: "🧑‍🤝‍🧑 People plugin"
 cost: 1 GraphQL request per 100 users + 1 REST request per user in "plugin_people_thanks"
-categorie: github
+category: github
 index: 9
 supports:
   - user
@@ -79,4 +79,4 @@ inputs:
   plugin_people_shuffle:
     description: Shuffle users
     type: boolean
-    default: no
+    default: no