add missing docs

docs/_sources/api/auth.rst.txt

@@ -0,0 +1,14 @@
+Authentication
+##############
+
+.. autoflask:: fittrackee:create_app()
+   :endpoints:
+    auth.register_user,
+    auth.login_user,
+    auth.logout_user,
+    auth.get_authenticated_user_profile,
+    auth.edit_user,
+    auth.edit_picture,
+    auth.del_picture,
+    auth.request_password_reset,
+    auth.update_password