Fix README

README.md

@@ -24,7 +24,7 @@ On TYT MD-3x0 and MD-UV3x0 you can flash our firmware using tarxvf's web based f
 
 - Download the latest OpenRTX release for your radio from [the releases page](https://github.com/OpenRTX/OpenRTX/releases).
 - Connect your radio to the PC, put it in DFU mode (turn off, turn on pressing PTT and the button just above).
-- On any operating system, open Chrome/Chromium and navigate to [dmr.tools](https://dmr.tools),
+- On linux, macOS and Android, open Chrome/Chromium and navigate to [dmr.tools](https://dmr.tools),
 - Click on "Upgrade", then "Connect Radio(s)", under "Select firmware file" choose "Upload from my computer",
 - Click on "Choose File", select the latest OpenRTX release you downloaded before, and click on "Upgrade Radio".
 - Reboot your radio