[ci skip] Fix #3515
diff --git a/user_guide_src/source/general/cli.rst b/user_guide_src/source/general/cli.rst
index 4f3b07d..b45be1a 100644
--- a/user_guide_src/source/general/cli.rst
+++ b/user_guide_src/source/general/cli.rst
@@ -23,7 +23,7 @@
 
 -  Run your cron-jobs without needing to use *wget* or *curl*
 -  Make your cron-jobs inaccessible from being loaded in the URL by
-   checking the return value of :func:`is_cli()`.
+   checking the return value of :php:func:`is_cli()`.
 -  Make interactive "tasks" that can do things like set permissions,
    prune cache folders, run backups, etc.
 -  Integrate with other applications in other languages. For example, a