Minor readme tweak

Author: sindresorhus

readme.md

@@ -78,7 +78,8 @@ Returns a `Promise<object>` with the result, or `Promise<undefined>` if there is
 	- `processId` *(number)* - Process identifier
 	- `bundleId` *(string)* - Bundle identifier *(macOS only)*
 	- `path` *(string)* - Path to the app
-- `url` *(string?)* - URL of the active browser tab if the active window is Safari (includes Technology Preview), Chrome (includes Beta, Dev, and Canary), Edge (includes Beta, Dev, and Canary), Brave (includes Beta and Nightly), Mighty, Ghost Browser, Wavebox, Sidekick, Opera (includes Beta and Developer), or Vivaldi *(macOS only)*
+- `url` *(string?)* - URL of the active browser tab if the active window *(macOS only)*
+	- Supported browsers: Safari (includes Technology Preview), Chrome (includes Beta, Dev, and Canary), Edge (includes Beta, Dev, and Canary), Brave (includes Beta and Nightly), Mighty, Ghost Browser, Wavebox, Sidekick, Opera (includes Beta and Developer), or Vivaldi
 - `memoryUsage` *(number)* - Memory usage by the window owner process
 
 ### activeWindow.getOpenWindows()