[MINOR] Fix links install guide
diff --git a/docs/site/install.md b/docs/site/install.md
index 24494c9..dc75e94 100644
--- a/docs/site/install.md
+++ b/docs/site/install.md
@@ -23,9 +23,9 @@
 
 This guide helps in the install and setup of SystemDS from source code.
 
-- [Windows Guide](#Windows)
-- [Ubuntu/Linux Guide](#Ubuntu%2020.04)
-- [Mac](#Mac)
+- [Windows Guide](#windows)
+- [Ubuntu/Linux Guide](#ubuntu%2020.04)
+- [Mac](#mac)
 
 ## Windows