Fix broken link

Change-Id: I1d7d5826e29a3054be7e87313fd6aacc7c5f05ad
diff --git a/src/source/roles.md b/src/source/roles.md
index 5e7c62a..9252ec8 100644
--- a/src/source/roles.md
+++ b/src/source/roles.md
@@ -17,7 +17,7 @@
 # People and Roles #
 
 The Android Open Source Project (AOSP) includes individuals working in a variety
-of roles. As noted in [Our Philosophy](philosophy.html), Google is responsible for Android product management
+of roles. As noted in [Our Philosophy](/about/philosophy.html), Google is responsible for Android product management
 and the engineering process for the core framework and platform; however,
 the project considers contributions from any source, not just Google. This
 page describes the kinds of roles that interested parties can take on.