Docs polish

chrome/common/extensions/docs/static/samples.html

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 <p>
 This page shows some sample extensions,
 with links that let you install them
 and find their source code.
 Each sample also has links to the documentation
 for each feature used by the sample.
 </p>
 
-<p><b>Note:</b> To run these samples, you need to be using the <a href="http://dev.chromium.org/getting-involved/dev-channel">Dev or Beta channel</a> of Google Chrome.
+<p><b>Note:</b> To run these samples, you need to be using the <a href="http://dev.chromium.org/getting-involved/dev-channel">Dev Channel</a> of Google Chrome.
 
 <p>
 For more example code, see the
 <a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/" target="_blank">Chromium examples directory</a>.
 </p>
 
 
 <h2>Google Mail Checker</h2>
 
 <p>Adds a Google Mail button to the toolbar which displays the number of unread messages in your inbox. You can also click the button to open your inbox.
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   <li><a href="xhr.html">Cross-origin XMLHttpRequest</a>
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 <br>
 <h2>Other samples</h2>
 <p>These samples use similar capabilities to the ones above, but to implement different features.</p>
 <ul>
   <li><b>Chromium buildbot monitor</b>: Monitors the Chromium tree status. <a href="https://clients2.google.com/service/update2/crx?response=redirect&x=id%3Dafmppjmdopaajlhgcddfhfhfgincjeih%26uc%26lang%3Den-US">Install</a> <a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/extensions/news/">Source</a>
   <li><b>Mappy</b>: Easily access a map for the first address on any web page. <a href="https://clients2.google.com/service/update2/crx?response=redirect&x=id%3Dobjeacibkcphiplbghlbmlbnihbbmfjl%26uc%26lang%3Den-US">Install</a> <a href="http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/extensions/mappy/">Source</a>
 </ul>