Relative link to CONTRIBUTING.

Change-Id: Ie247085c32e1c674e95cea9ec41d970ea6782486
diff --git a/docs/GettingStarted.md b/docs/GettingStarted.md
index 9ab08f4..98c6196 100644
--- a/docs/GettingStarted.md
+++ b/docs/GettingStarted.md
@@ -15,7 +15,7 @@
 Browse source at https://hafnium.googlesource.com/hafnium.
 Review CLs at https://hafnium-review.googlesource.com/.
 
-See details of [how to contribute](CONTRIBUTING.md).
+See details of [how to contribute](../CONTRIBUTING.md).
 
 ## Compiling the hypervisor