Fixing errror message (#424)

fixing error message when HAL9_TOKEN is missing

python/hal9/targets/hal9.py

@@ -93,7 +93,7 @@ def deploy(path :str, url :str, name :str, typename :str, data :str, access :str
     if 'HAL9_TOKEN' in os.environ:
         hal9_token = os.environ['HAL9_TOKEN']
     else:
-        exit(f'HAL9_TOKEN environment variable missing, see https://hal9.com/deploy')
+        exit(f'HAL9_TOKEN environment variable missing, see https://hal9.com/devs')
         # hal9_token = browser_login()
 
     request_deploy(path, url, name, typename, data, access, main, title, description)