Update INSTALL.md

Co-authored-by: Harrissou Sant-anna <delazj@gmail.com>

INSTALL.md

@@ -3,7 +3,6 @@ Building QGIS from source - step by step
 <!-- Table of contents generated with https://freelance-tech-writer.github.io/table-of-contents-generator/index.html -->
 
 # Table of Contents
-- [Table of Contents](#table-of-contents)
 - [1. Introduction](#1-introduction)
 - [2. Overview](#2-overview)
 - [3. Building on GNU/Linux](#3-building-on-gnulinux)
@@ -1210,4 +1209,4 @@ The following people have contributed to this document:
   * Larry Shaffer 2012, by way of 'Test Friday' Tim Sutton
 
 * MXE/Mingw64 section
-  * Alessandro Pasotti (2018-2021)
+  * Alessandro Pasotti (2018-2021)