Rename "Goals" to "Approach"

_data/navigation.yaml

@@ -20,8 +20,8 @@ docs_nav:
     subitems:
       - title: What is TSDoc?
         url: /
-      - title: Project goals
-        url: /pages/intro/goals
+      - title: Approach
+        url: /pages/intro/approach
       - title: How can I use TSDoc?
         url: /pages/intro/using_tsdoc
       - title: Project roadmap

pages/intro/approach.md

@@ -1,6 +1,6 @@
 ---
 layout: page
-title: Project goals
+title: Approach
 navigation_source: docs_nav
 ---
 

pages/intro/roadmap.md

@@ -1,6 +1,6 @@
 ---
 layout: page
-title: Project goals
+title: Project roadmap
 navigation_source: docs_nav
 ---