Include REALTEK_RTL8195AM and clean up docs

Author: Bartek Szatkowski

README.md

@@ -10,7 +10,8 @@ The program brings up the WiFi and the underlying network interface, and uses it
 
 ### Supported hardware ###
 
-* [UBLOX Odin board](https://developer.mbed.org/platforms/ublox-EVK-ODIN-W2/) (`UBLOX_EVK_ODIN_W2` target when using mbed CLI) with ESP8266-01 module using pins D1 D0
+* [UBLOX Odin board](https://developer.mbed.org/platforms/ublox-EVK-ODIN-W2/) built-in WiFi module
+* [REALTEK_RTL8195AM](https://developer.mbed.org/platforms/REALTEK-RTL8195AM/) built-in WiFi module
 * [NUCLEO_F429ZI](https://developer.mbed.org/platforms/ST-Nucleo-F429ZI/) with ESP8266-01 module using pins D1 D0
 * [NUCLEO_L476RG](https://developer.mbed.org/platforms/ST-Nucleo-L476RG/) with ESP8266-01 module using pins D8 D2
 * Other mbed target with ESP2866 module (Board it's connected to shouldn't have other network interface eg. Ethernet)