Remove html parse block markup

Readme.md

-{::options parse_block_html="true" /}
-
 <h1 style="color:blue;" align="center">
   Rugged
 </h1>
@@ -17,8 +15,6 @@
   <a href="#development">Development</a>
 </p>
 
-{::options parse_block_html="false" /}
-
 
 Rugged is an add-on for [Orekit](https://www.orekit.org/) handling Digital Elevation Models contribution to 
 line of sight computation. It is a free software intermediate-level library written in Java.