Link to JSX in depth on the Component Specs and Lifecycle page is wrong

[tcoopman]

The link to "JSX in depth" in the "displayName" section on the "Component Specs and Lifecycle" page points to http://facebook.github.io/react/docs/react/docs/jsx-in-depth.html#react-composite-components.

This url is not correct, the correct url is: http://facebook.github.io/react/docs/jsx-in-depth.html

[plievone]

Thanks! Fixed in #844. You can close this.