[docs] Link to https://github.com/cubing/cubing-app-template

Author: lgarron

docs/cubing/index.html

@@ -127,7 +127,7 @@ <h1><a href="#javascript"><code>npm</code> package</a></h1>
         Most examples on this site use CDN import paths for convenient copy-and-pasting. To import from <code>npm</code>, remove the <code class="boilerplate">https://cdn.cubing.net/js/</code> prefix from any relevant imports.
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       <p>
-        The <code>npm</code> package should work with any modern bundlers and tools. If you are having trouble, make sure your tool is compatible with ES2020 syntax. We recommend using <a href="https://esbuild.github.io/"><code>esbuild</code></a> or tools based on <code>esbuild</code> if you're starting a new project.
+        The <code>npm</code> package should work with any modern bundlers and tools. If you are having trouble, make sure your tool is compatible with ES2020 syntax. We recommend using <a href="https://esbuild.github.io/"><code>esbuild</code></a> or tools based on <code>esbuild</code>, and you may find <a href="https://github.com/cubing/cubing-app-template">this project template</a> a helpful start.
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     </section>