Remove .html extension from links

chrome/common/extensions/docs/templates/articles/messaging.html

Index: chrome/common/extensions/docs/templates/articles/messaging.html
diff --git a/chrome/common/extensions/docs/templates/articles/messaging.html b/chrome/common/extensions/docs/templates/articles/messaging.html
index 9aa7b667282252d695225ef2dd1319977db466f4..aae1ac512f4f1f1d969ee984247d6a8721d75360 100644
--- a/chrome/common/extensions/docs/templates/articles/messaging.html
+++ b/chrome/common/extensions/docs/templates/articles/messaging.html
@@ -47,7 +47,7 @@ chrome.runtime.sendMessage({greeting: "hello"}, function(response) {
 Sending a request from the extension to a content script looks very similar,
 except that you need to specify which tab to send it to. This example
 demonstrates sending a message to the content script in the selected tab.
-<pre data-filename="background.html">
+<pre data-filename="background">
 chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
   chrome.tabs.sendMessage(tabs[0].id, {greeting: "hello"}, function(response) {
     console.log(response.farewell);
@@ -458,5 +458,5 @@ in which a content script and its parent extension exchange messages,
 so that the parent extension can perform
 cross-site requests on behalf of the content script.
 For more examples and for help in viewing the source code, see
-<a href="samples.html">Samples</a>.
+<a href="samples">Samples</a>.
 </p>