Fix index.html to use anchors instead of markdown syntax 🤦‍♂️ (devcontainers#68)

Author: Chuxel

index.html

@@ -29,7 +29,7 @@ <h2 class="header-light regular-pad">What are Development Containers?</h2>
 
             <p>A Development Container (or Dev Container for short) allows you to use a container as a full-featured development environment. It can be used to run an application, to separate tools, libraries, or runtimes needed for working with a codebase, and to aid in continuous integration and testing. Dev containers can be run locally or remotely, in a private or public cloud.</p>
 
-            <p>The Development Containers Specification seeks to find ways to enrich existing formats with common development specific settings, tools, and configuration while still providing a simplified, un-orchestrated single container option – so that they can be used as coding environments or for continuous integration and testing. Beyond the specification's core metadata, the spec also enables developers to quickly share and reuse container setup steps through [Dev Container Features](./features) and [Templates](./templates). </p>
+            <p>The Development Containers Specification seeks to find ways to enrich existing formats with common development specific settings, tools, and configuration while still providing a simplified, un-orchestrated single container option – so that they can be used as coding environments or for continuous integration and testing. Beyond the specification's core metadata, the spec also enables developers to quickly share and reuse container setup steps through <a href="./features" aria-label="See the Dev Container Features spec">Dev Container Features</a> and <a href="./templates" aria-label="See the Dev Container Templates spec">Templates</a>. </p>
 
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