Merge pull request #284 from Zeeh-Lin/fix-scala-guide-structure

docs: fix duplicated headings and navigation order in 'Getting Starte…

Author: Dolu1990

source/SpinalHDL/Getting Started/Scala Guide/index.rst

@@ -10,11 +10,6 @@ Scala Guide
    interaction
 
 
-Scala guide
-===========
-
-Introduction
-------------
 Scala is a very capable programming language that was influenced by a unique set of languages, but often, this set of languages doesn't cross the ones that most programmers use. That can hinder newcomers' understanding of the concepts and design choices behind Scala.
 
 The following pages will present Scala, and try to provide enough information about it for newcomers to be comfortable with SpinalHDL.