Update application-check.mdx (#25620)

Author: ranbel

src/content/docs/cloudflare-one/identity/devices/warp-client-checks/application-check.mdx

@@ -119,7 +119,7 @@ Learn how the WARP client determines if an application is running on various sys
 To get the list of active processes, run the following command:
 
 ```sh
-ps -eo comm | xargs which | sort | uniq | xargs realpath
+ps -eo comm | xargs -I {} which "{}" | sort | uniq | xargs -I {} realpath "{}"
 ```
 
 The application path must appear in the output for the check to pass.