Cert revoke: grep 'ps aux' output in a case-insensitive way (#21771)

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## Description

This will make sure that any binary running from Docker.app, and any
Desktop process will be killed appropriately.

## Related issues or tickets

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## Reviews

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- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

Signed-off-by: Albin Kerouanton <[email protected]>

content/manuals/desktop/cert-revoke-solution.md

@@ -30,7 +30,7 @@ If possible, update directly through the app. If not, and you’re still seeing
    $ sudo rm /Library/PrivilegedHelperTools/com.docker.vmnetd || true
    $ sudo rm /Library/PrivilegedHelperTools/com.docker.socket || true
  
-   $ ps aux | grep docker | awk '{print $2}' | sudo xargs kill -9 2>/dev/null
+   $ ps aux | grep -i docker | awk '{print $2}' | sudo xargs kill -9 2>/dev/null
    ```
 
 2. Make sure the malware pop-up is permanently closed. 
@@ -80,7 +80,7 @@ For versions 4.32 - 4.33, a patch fix is in progress. If you need an immediate s
    $ sudo rm /Library/PrivilegedHelperTools/com.docker.vmnetd || true
    $ sudo rm /Library/PrivilegedHelperTools/com.docker.socket || true
  
-   $ ps aux | grep docker | awk '{print $2}' | sudo xargs kill -9 2>/dev/null
+   $ ps aux | grep -i docker | awk '{print $2}' | sudo xargs kill -9 2>/dev/null
    ```
 
 2. Download and install a re-signed installer matching your exact version of Docker Desktop from the [Release notes](/manuals/desktop/release-notes.md).