feat: better invalid token hint

bin/joj3-forge-convert

@@ -73,11 +73,11 @@ GITEA_ORG_NAME=$org_name
 GITEA_ACCESS_TOKEN=$TEAPOT_GITEA_TOKEN
 EOF
         if ! (cd /tmp && joint-teapot joj3-check-gitea-token "$teapot_config_dir/teapot.env"); then
-            echo "FATAL: TEAPOT_GITEA_TOKEN invalid" >&2
+            echo "FATAL: TEAPOT_GITEA_TOKEN invalid, ask admin to update it" >&2
             exit 1
         fi
     else
-        echo "FATAL: TEAPOT_GITEA_TOKEN not set" >&2
+        echo "FATAL: TEAPOT_GITEA_TOKEN not set, ask admin to set it" >&2
         exit 1
     fi
 }