fix: allow accessing the JSON-LD context with JWT (#1225)

Author: alanpoulain

core/jwt.md

@@ -90,6 +90,7 @@ security:
 
     access_control:
         - { path: ^/docs, roles: IS_AUTHENTICATED_ANONYMOUSLY } # Allows accessing the Swagger UI
+        - { path: ^/contexts, roles: IS_AUTHENTICATED_ANONYMOUSLY } # Allows accessing the JSON-LD context
         - { path: ^/authentication_token, roles: IS_AUTHENTICATED_ANONYMOUSLY }
         - { path: ^/, roles: IS_AUTHENTICATED_FULLY }
 ```