Update README.md

Author: ABOSTM

README.md

@@ -9,17 +9,19 @@ This NFC sensor uses I2C to communicate.
 It creates the instance st25dv.
 
 It is then required to call begin API with the 2 pins to be used before accessing to the sensors, and optionally wire instance:
-    `    st25dv->begin(gpo_pin, lpd_pin);`
-or
+```cpp
+    st25dv->begin(gpo_pin, lpd_pin);
 ```
+or
+```cpp
     TwoWire MyWire(SDA_PIN, SCL_PIN);
     st25dv->begin(gpo_pin, lpd_pin, MyWire);
 ```
 
 
 It is then possible to read/write NFC URI:
 
-```
+```cpp
     int writeURI(String protocol, String uri, String info);
     String readURI();
 ```
@@ -30,6 +32,6 @@ It is then possible to read/write NFC URI:
 You can find the source files at
 https://github.com/stm32duino/ST25DV
 
-The ST25DV datasheets are available at
-https://www.st.com/content/st_com/en/products/nfc/st25-nfc-rfid-tags-readers/st25-dynamic-nfc-tags/st25dv-i2c-series-dynamic-nfc-tags/st25dv04k.html
-https://www.st.com/content/st_com/en/products/nfc/st25-nfc-rfid-tags-readers/st25-dynamic-nfc-tags/st25dv-i2c-series-dynamic-nfc-tags/st25dv64k.html
+The ST25DV datasheets are available at:  
+* https://www.st.com/content/st_com/en/products/nfc/st25-nfc-rfid-tags-readers/st25-dynamic-nfc-tags/st25dv-i2c-series-dynamic-nfc-tags/st25dv04k.html
+* https://www.st.com/content/st_com/en/products/nfc/st25-nfc-rfid-tags-readers/st25-dynamic-nfc-tags/st25dv-i2c-series-dynamic-nfc-tags/st25dv64k.html