Adds height:auto to images to prevent vertical stretching.

chrome/common/extensions/docs/static/css/out/site.css

Index: chrome/common/extensions/docs/static/css/out/site.css
diff --git a/chrome/common/extensions/docs/static/css/out/site.css b/chrome/common/extensions/docs/static/css/out/site.css
index 08d82fd444d532630840338a5915611d978dcfea..d11d73203bec41436ad3dd67cdbe8a6ce75cb35c 100644
--- a/chrome/common/extensions/docs/static/css/out/site.css
+++ b/chrome/common/extensions/docs/static/css/out/site.css
@@ -1,4 +1,4 @@
 /*! Copyright 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
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