fix: remove draft status from render graph optimization content

fix: update section title for clarity on render graph limitations

Author: jasonrandrews

content/learning-paths/mobile-graphics-and-gaming/render-graph-optimization/_index.md

@@ -1,10 +1,6 @@
 ---
 title: Optimizing graphics using Frame Advisor’s render graphs
 
-draft: true
-cascade:
-    draft: true
-
 minutes_to_complete: 30
 
 who_is_this_for: Mobile application developers who wish to improve graphics performance.

content/learning-paths/mobile-graphics-and-gaming/render-graph-optimization/what-are-render-graphs.md

@@ -28,7 +28,7 @@ Render graphs can help diagnose:
 
 Both of these issues can lead to an increase in GPU load and/or bandwidth.
 
-## When *not* to use render graphs
+## What are the limitations of render graphs?
 
 Many performance issues cannot be seen in render graphs, or can be better seen elsewhere. For example, render graphs should not be used to diagnose: