Update README.md

README.md

@@ -15,14 +15,14 @@ An interrupt is generated when the UART has finished transmitting or
 receiving a byte. The interrupt handling routines use circular buffers
 for buffering received and transmitted data.
 
-The UART_RXn_BUFFER_SIZE and UART_TXn_BUFFER_SIZE constants define
+The `UART_RXn_BUFFER_SIZE` and `UART_TXn_BUFFER_SIZE` constants define
 the size of the circular buffers in bytes. Note that these constants must be a power of 2.
 You may need to adapt this constants to your target and your application by adding to your
 compiler options:
 
 	-DUART_RXn_BUFFER_SIZE=nn -DUART_TXn_BUFFER_SIZE=nn
 
-RXn and TXn refer to UART number, for UART3 with 128 byte buffers, add:
+`RXn` and `TXn` refer to UART number, for UART3 with 128 byte buffers, add:
 
 	-DUART_RX3_BUFFER_SIZE=128 -DUART_TX3_BUFFER_SIZE=128