Create Table of Content links in markdown files

Fixes arm-software/tf-issues#276
diff --git a/docs/cpu-specific-build-macros.md b/docs/cpu-specific-build-macros.md
index 246381a..b913f5f 100644
--- a/docs/cpu-specific-build-macros.md
+++ b/docs/cpu-specific-build-macros.md
@@ -4,9 +4,10 @@
 Contents
 --------
 
-1.  Introduction
-2.  CPU Errata Workarounds
-3.  CPU Specific optimizations
+1.  [Introduction](#1--introduction)
+2.  [CPU Errata Workarounds](#2--cpu-errata-workarounds)
+3.  [CPU Specific optimizations](#3--cpu-specific-optimizations)
+
 
 1.  Introduction
 ----------------