docs: Document TUI QR code limitation (#8704)

* Document TUI QR code limitation

* ci: auto-formatting prettier issues

* Empty commit to trigger Netlify

* Update initial-setup.md

* Empty commit to trigger Netlify

---------

Co-authored-by: svetlana-efimova <[email protected]>

Author: svetlana-efimova

docs/docs-content/clusters/edge/site-deployment/site-installation/initial-setup.md

@@ -23,6 +23,12 @@ automatically. To launch the setup manually, issue the command `/opt/spectroclou
 
 :::
 
+## Limitations
+
+- Depending on the console environment, the TUI may not display the full QR code for Palette registration. This issue
+  has been observed in the VMware vSphere web console, where limited console window size can cause the QR code to appear
+  partially truncated.
+
 ## Prerequisites
 
 - An Edge host installed with Edge Installer 4.3 or later.