fix some links

docs/refactor/02-displaying-data.md

@@ -71,8 +71,8 @@ We've found that the best solution for this problem is to generate markup direct
 
 **JSX lets you write JavaScript function calls with HTML syntax.** To generate, say, a link using pure JavaScript you'd write: `React.DOM.a({href: 'http://facebook.github.io/react/'}, 'Hello React!')`. With JSX this becomes `<a href="http://facebook.github.io/react/">Hello React!</a>`. We've found this has made building React apps easier and designers tend to prefer the syntax, but everyone has their own workflow, so **JSX is not required to use React.**
 
-JSX is very small; the "hello, world" example above uses every feature of JSX. To learn more about it, see [JSX in depth](./02.1-jsx-in-depth.md). Or see the transform in action in [our live JSX compiler](/react/jsx-compiler.html).
+JSX is very small; the "hello, world" example above uses every feature of JSX. To learn more about it, see [JSX in depth](./02.1-jsx-in-depth.html). Or see the transform in action in [our live JSX compiler](/react/jsx-compiler.html).
 
-JSX is similar to HTML, but not exactly the same. See [JSX gotchas](./02.2-jsx-gotchas.md) for some key differences.
+JSX is similar to HTML, but not exactly the same. See [JSX gotchas](./02.2-jsx-gotchas.html) for some key differences.
 
 The easiest way to get started with JSX is to use the in-browser `JSXTransformer`, but in production you'll want to precompile your code using our command-line [react-tools](http://npmjs.org/package/react-tools) package.

docs/refactor/02.1-jsx-in-depth.md

@@ -167,4 +167,4 @@ efforts include:
 - JSX neither provides nor requires a runtime library.
 - JSX does not alter or add to the semantics of JavaScript.
 
-JSX is similar to HTML, but not exactly the same. See [JSX gotchas](./02.2-jsx-gotchas.md) for some key differences.
+JSX is similar to HTML, but not exactly the same. See [JSX gotchas](./02.2-jsx-gotchas.html) for some key differences.

docs/refactor/07-working-with-the-browser.md

@@ -50,7 +50,7 @@ React.renderComponent(
 
 ## More about refs
 
-To learn more about refs, including ways to use them effectively, see our [more about refs](./07.1-more-about-refs.md) documentation.
+To learn more about refs, including ways to use them effectively, see our [more about refs](./07.1-more-about-refs.html) documentation.
 
 ## Component lifecycle
 

docs/refactor/09-reference.md

@@ -144,7 +144,7 @@ componentDidUpdate(object prevProps, object prevState, DOMElement domNode)
 componentWillUnmount()
 ```
 
-See the [working with the browser](./07-working-with-the-browser.md) documentation for more details on these lifecycle methods.
+See the [working with the browser](./07-working-with-the-browser.html) documentation for more details on these lifecycle methods.
 
 ## DOM differences