Revise Chrome extension installation instructions

Updated installation instructions for the Chrome extension and added a note about the upcoming V2 PIIRedact model release.

Author: Jibbscript

docs/unsigned-native-host-install.md

@@ -26,7 +26,9 @@ The package contains an ad-hoc signed native-host binary and is not Apple notari
 
 Install the Chrome extension from the Chrome Web Store:
 
-<https://chromewebstore.google.com/detail/privacyguard/ncmfgfeipmcjibfmeglbmhoogfflabhh>
+TBA - V2 PIIRedact model release soon !
+
+Please refer to Repository Releases for current ALPHA Release installation steps.
 
 ## Verify The Install