add link to embroider

Author: mansona

app/templates/editions/polaris.hbs

@@ -37,7 +37,7 @@
     It also helps unlock the road to new capabilities such as code splitting in the future. See the <a href="https://github.com/ember-template-imports/ember-template-imports">ember-template-imports repository </a> to get started today!</p>
 
   <h3>3. Embroider build system</h3>
-  <p>Embroider is the next-generation build system for Ember apps. The goal is to compile Ember apps into spec-compliant, modern Javascript. This allows the integration with all the build tooling improvements seen in the wider JavaScript ecosystem.</p>
+  <p><a href="https://github.com/embroider-build/embroider">Embroider</a> is the next-generation build system for Ember apps. The goal is to compile Ember apps into spec-compliant, modern Javascript. This allows the integration with all the build tooling improvements seen in the wider JavaScript ecosystem.</p>
 
   <h3>4. Reactivity improvements</h3>
   <p>The Octane edition saw the introduction of auto-tracking which simplified the previous reactivity system, and made it more performant. Polaris introduces the concept of <a href="https://github.com/NullVoxPopuli/ember-resources">resources</a>. This pattern is a general concept that extends beyond Ember or any framework. To learn about the framework-agnostic approach to universal reactivity, check out the <a href="https://www.starbeamjs.com/">Starbeam Project</a>.</p>