Fixes dead getting started link. (#2652)

README.md

diff --git a/README.md b/README.md
index b1fd668..129547c 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@
 working on enabling macOS support. For deployment, IREE aims to additionally
 cover Android and iOS.
 
-Please see the [Getting Started](https://google.github.io/iree/get_started)
+Please see the [Getting Started](https://google.github.io/iree/get-started)
 pages on IREE's [documentation hub](https://google.github.io/iree) to configure,
 compile, and run IREE in your favorite development environment!