chore: Update copyright (#1764)

docs/README.md

@@ -12,7 +12,7 @@ features:
     details: Get up and running quickly with opinionated generators, or add recommended tools to existing projects. Our comprehensive fleet of generators have got you covered.
   - title: Open Source Love
     details: Open Web Components is a community-effort, independent of any framework or company. We use mostly open-source tools and services.
-footer: MIT Licensed | Copyright © 2018-2019 open-wc
+footer: MIT Licensed | Copyright © 2018-2020 open-wc
 ---
 
 <hr>

docs/_includes/home.njk

@@ -78,7 +78,7 @@
           <div class="theme-default-content custom content__default">
             {{ content.html | safe }}
             <div class="footer">
-              MIT Licensed | Copyright © 2018-2019 open-wc
+              MIT Licensed | Copyright © 2018-2020 open-wc
             </div>
           </main>
         </div>