support new link structure

src/tickers/tickers.go

@@ -1,6 +1,6 @@
 // ## Tickers
 
-// [Timers](timers.html) are for when you want to do
+// [Timers](timers) are for when you want to do
 // something once in the future - tickers are for when you
 // want to do something repeatedly at regular intervals.
 // Here's an example of a ticker that ticks periodically

src/timers/timers.go

@@ -4,7 +4,7 @@
 // future, or repeatedly at some interval. Go's built-in
 // timer and ticker features make both of these tasks
 // easy. We'll look first at timers and then
-// at [tickers](tickers.html).
+// at [tickers](tickers).
 
 package main
 

template/index.tmpl

@@ -20,7 +20,7 @@
       <h2>Go by Example</h2>
       <ul>
       {{range .}}
-        <li><a href="{{.Id}}.html">{{.Name}}</a></li>
+        <li><a href="{{.Id}}">{{.Name}}</a></li>
       {{end}}
       </ul>
     </div>