Updated Compatible boards (markdown)

Compatible-boards.md

@@ -47,8 +47,10 @@ Require LoRa module pinout definitions in `config.h`:
    #define LORA_IRQ              26
    ```
 
-# Solder pad configuration
+# Solder pad configuration for project dev board
 - ESP-WROOM32 38pin
+
 ![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/images/esp32_38pin.jpg)
+
 ![alt text](https://raw.githubusercontent.com/sh123/esp32_loraprs/master/images/solder_pads_38pin.jpg)