docs: add missing oidc variables to example env

.env.example

@@ -32,7 +32,9 @@ KEEP_DELETED_TRANSACTIONS_FOR=365
 
 TASK_WORKERS=1 # This only work if you're using the single container option. Increase to have more open queues via procrastinate, you probably don't need to increase this.
 
-# OIDC Configuration
-OIDC_CLIENT_ID=""
-OIDC_CLIENT_SECRET=""
-OIDC_SERVER_URL=""
+# OIDC Configuration. Uncomment the lines below if you want to add OIDC login to your instance
+#OIDC_CLIENT_NAME=""
+#OIDC_CLIENT_ID=""
+#OIDC_CLIENT_SECRET=""
+#OIDC_SERVER_URL=""
+#OIDC_ALLOW_SIGNUP=true