Update README.md

README.md

 # Syntax-Derived Editor for ES Tools
 
 #### Editors
-* [OSS](/eu.fbk.tools.editor/eu.fbk.tools.editor.oss)
-  * [Contract](/eu.fbk.tools.editor/eu.fbk.tools.editor.contract)
-    * [Expression](/eu.fbk.tools.editor/eu.fbk.tools.editor.contract.expression)
-      * [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
-* [NuSMV](/eu.fbk.tools.editor/eu.fbk.tools.editor.nusmv)
-  * [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
-* [Fei](/eu.fbk.tools.editor/eu.fbk.tools.editor.fei)
-  * [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
-* [Tfpg](/eu.fbk.tools.editor/eu.fbk.tools.editor.tfpg)
-  * [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
-* [Tfpga](/eu.fbk.tools.editor/eu.fbk.tools.editor.tfpga)
-  * [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
-* [CleanC](/eu.fbk.tools.editor/eu.fbk.tools.editor.c)
-  * [Statement](/eu.fbk.tools.editor/eu.fbk.tools.editor.c.statement)
-    * [Expression](/eu.fbk.tools.editor/eu.fbk.tools.editor.c.expression)
+* [**OSS**](/eu.fbk.tools.editor/eu.fbk.tools.editor.oss)
+-> [Contract](/eu.fbk.tools.editor/eu.fbk.tools.editor.contract)
+-> [Expression](/eu.fbk.tools.editor/eu.fbk.tools.editor.contract.expression)
+-> [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
+* [**NuSMV**](/eu.fbk.tools.editor/eu.fbk.tools.editor.nusmv)
+-> [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
+* [**Fei**](/eu.fbk.tools.editor/eu.fbk.tools.editor.fei)
+-> [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
+* [**Tfpg**](/eu.fbk.tools.editor/eu.fbk.tools.editor.tfpg)
+-> [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
+* [**Tfpga**](/eu.fbk.tools.editor/eu.fbk.tools.editor.tfpga)
+-> [Base Types](/eu.fbk.tools.editor/eu.fbk.tools.editor.basetype)
+* [**CleanC**](/eu.fbk.tools.editor/eu.fbk.tools.editor.c)
+-> [Statement](/eu.fbk.tools.editor/eu.fbk.tools.editor.c.statement)
+-> [Expression](/eu.fbk.tools.editor/eu.fbk.tools.editor.c.expression)
 
 Following a _not exhaustive_ representation of the grammars hierarchy (some are missing, i.e. Tfpg, Tfpga, and CleanC)
 ![Grammar Hierarchy](docs/Grammars%20Hierarchy.png)