Update index.md with 6.5 video

Author: akenmorris

docs/index.md

@@ -77,6 +77,9 @@ ShapeWorks has been effective in various applications, including psychology, bio
 
 Now enjoy some tour videos for different recent software releases.
 
+*ShapeWorks 6.5 tour - Shape / Scalar Correlation, Network Analysis, DeepSSM Improvments, and more ...*
+<p><video src="https://sci.utah.edu/~shapeworks/doc-resources/mp4s/ShapeWorks6.5.mp4" autoplay muted loop controls style="width:100%"></p>
+
 *ShapeWorks 6.4 tour - Multi-level PCA, Improved Constraints, Python Docs, and more ...*
 <p><video src="https://sci.utah.edu/~shapeworks/doc-resources/mp4s/ShapeWorks6.4.mp4" autoplay muted loop controls style="width:100%"></p>