Fix titles of Visual Script tutorials

learning/scripting/visual_script/getting_started.rst

@@ -1,9 +1,7 @@
 .. _doc_getting_started_visual_script:
 
-Visual Scripting
-================
-Visual Scripting in Godot
--------------------------
+Getting started with Visual Scripting
+=====================================
 
 As with everything in Godot, we prioritize a good experience over copying or integrating third party solutions 
 which might not fit nicely in the current workflow. This led us to write our own version of how we believe

learning/scripting/visual_script/nodes_purposes.rst

@@ -1,10 +1,7 @@
 .. _doc_nodes_purposes_visual_script:
 
-Visual Scripting
-================
-
 Nodes and Terminology
-----------------------
+=====================
 
 Before continuing, it must be noted that the *Node* terminology needs to be used with care. 
 When referring to *Visual Script Nodes* (or generally *Nodes*) this text will refer to the little boxes you connect with lines, which are part of a graph.

learning/scripting/visual_script/what_is_visual_scripting.rst

@@ -1,10 +1,7 @@
 .. _doc_what_is_visual_script:
 
-Visual Scripting
-================
-
-Introduction
-------------
+What is Visual Scripting
+========================
 
 Visual Scripting is a tool designed to make the entry barrier to programming
 much lower. As code is more visual, it needs less abstract thinking to be