Update README.md

README.md

 # Segmentation via Layered Surface Detection
 
-1. [Description of Repository Content](#1)
+1. [Description of repository content](#1)
 2. [Set-up to run tutorials](#2)
 3. [Resources and inspiration](#3)
 4. [Contributions](#4)
 
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-## 1. Description of Repository Content
+## 1. Description of repository content
 The layered surface tool uses a sparse layered graphs in order detect layers in 2D and 3D images. The primary benefit of using this tool over standard edge detection is that it can detect layers even when there edge breaks or gaps in the layer.