Fix path in documentation.

Change-Id: I72ad0de1a8a35050456bca0d891cf388f4fdadfe
Reviewed-on: https://weave-review.googlesource.com/2184
Reviewed-by: Vitaly Buka <vitalybuka@google.com>

README.md

diff --git a/README.md b/README.md
index 6fee848..548d302 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@
 examples/build.sh
 ```
 
-### Execute example (see this [README](examples/daemon/README.md) for details):
+### Execute example (see this [README](/examples/daemon/README.md) for details):
 
 ```
 sudo out/Debug/weave_daemon