Update profile-api.md

fixed typo anonymouse_id -> anonymous_id

Author: Isuru-F

src/personas/profile-api.md

@@ -93,7 +93,7 @@ The response is returned as a JSON object which contains the queried user's assi
 
   `https://profiles.segment.com/v1/spaces/<space-id>/collections/users/profiles/<user_identifier>/events`
 
-- **External IDs**: Query all of a user's external IDs (for example, `anonymouse_id`You can query all of a user's external ids (anonymous_id, user_id, ios.):
+- **External IDs**: Query all of a user's external IDs (for example, `anonymous_id`You can query all of a user's external ids (anonymous_id, user_id, ios.):
 
   `https://profiles.segment.com/v1/spaces/<space-id>/collections/users/profiles/<user_identifier>/external_ids`