docs: Replace rDesktop by FreeRDP (#43)

Author: kroese

readme.md

@@ -85,7 +85,7 @@ docker run -it --rm --name windows -p 8006:8006 --device=/dev/kvm --cap-add NET_
 
   So for a better experience you can connect using any Microsoft Remote Desktop client to the IP of the container, using the username `docker` and by leaving the password empty.
 
-  There is a good RDP client for [Android](https://play.google.com/store/apps/details?id=com.microsoft.rdc.androidx) available from the Play Store. One for [iOS](https://apps.apple.com/nl/app/microsoft-remote-desktop/id714464092?l=en-GB) is in the Apple Store. For Linux you can use [rdesktop](http://www.rdesktop.org/) and for Windows you don't need to install anything as it is already ships as part of the operating system.
+  There is a good RDP client for [Android](https://play.google.com/store/apps/details?id=com.microsoft.rdc.androidx) available from the Play Store and one for [iOS](https://apps.apple.com/nl/app/microsoft-remote-desktop/id714464092?l=en-GB) in the Apple Store. For Linux you can use [FreeRDP](https://www.freerdp.com/) and on Windows just type `mstsc` in the search box.
 
 * ### How do I increase the amount of CPU or RAM?