Update README.md

Author: Alice Pintus

README.md

@@ -1,11 +1,12 @@
 #Refrence-en#
-Reference-en is the repo for the Language Reference documentation of the Arduino syntax in **English**.
+Reference-en is the repo for the Language Reference documentation of the Arduino syntax in **English**.  
 All the Reference terms files are in AsciiDoc format. Manutius, the Arduino platform to manage and publish content, turns Asciidoc documents into HTML pages, PDFs, and more.
 
 Thank you for taking the time to contribute to Arduino content, this is really helpful to the whole Arduino Community.
 
 ##Content Creation and Editing##
-If you want to contribute new content, create a new file (with any text or code editor) and save it as .adoc. Do not use parenthesis or any special character in the file name.
+If you want to contribute new content, create a new file (with any text or code editor) and save it as .adoc.  
+Do not use parenthesis or any special character in the file name.  
 In refernce-en/AsciiDoc_sample/AsciiDoc_Dictionary you will find an overview on the AsciiDoc syntax in use on the Manutius platform. This includes Titles, Text, Links, Images, Tables, Code and various embeds (video, slideshow, audio and code).
 
 If you want to contribute to the Language Reference or edit existing content, you can find two templates in reference-en/AsciiDoc_sample/Reference_Terms: