Update README.rst

Co-authored-by: Andrea Cecchi <[email protected]>

README.rst

@@ -710,7 +710,7 @@ Booking Additional Fields
 You can also create the addtional fields for your booking, you just need to compile 
 them in your PrenotazioneType.
 And they will appear in the ["booking_types"]["booking_additional_fields_schema"] 
-in your booking schema so u can compile them for your booking in this way:
+in your booking schema so you can compile them for your booking in this way:
 
 @booking
 --------