meta-google: cleanup README

Further cleanup of the README, including a phrasing tweak.

Change-Id: Idfd75f4be41868702e100dfa634174b9df1fe0cf
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/README b/README
index 9965f42..ef22a55 100644
--- a/README
+++ b/README
@@ -18,7 +18,7 @@
 
 Layer maintainer: Patrick Venture <venture@google.com>
 
-When sending patches, following [OpenBMC guidelines](https://github.com/openbmc/docs/blob/master/CONTRIBUTING.md).
+When sending patches, follow the OpenBMC guidelines.
 
 Table of Contents
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