Small fixes

docs/topics/BrowserPlugin.adoc

@@ -141,7 +141,8 @@ image::browser_advanced_settings.png[]
 
 ==== Custom Browser option
 
-It is possible to enable support for a custom browser (e.g. Librefox, Arc, etc.) using this feature.
+It is possible to enable support for a custom browser (e.g. LibreWolf, WaterFox, Arc, beta and nightly browsers, etc.) using this feature.
+This feature is only available for Linux and macOS.
 
 .Custom browser configuration
 image::browser_custom_browser_configuration.png[]
@@ -150,7 +151,7 @@ The native messaging script file needed for the custom browser depends on the br
 
 _Config location_ must have the exact path for the browser's _native-messaging-hosts_ folder. If you are unsure, refer to our https://github.com/keepassxreboot/keepassxc-browser/wiki/Troubleshooting-guide#1-after-enabling-browser-integration-and-support-for-your-browser[Troubleshooting Guide] for listing of the most common paths, and a few ways for finding a path when it's not known.
 
-When a Custom Browser has been successfully  set, KeePassXC will automatically write the needed native messaging script file to the folder.
+When a Custom Browser has been successfully set, KeePassXC will automatically write the needed native messaging script file to the folder.
 
 If you wish to support multiple custom browsers, you can copy the native messaging script files manually to the _native-messaging-hosts_ folder from other browsers.