fix(docs): add required sections to setting_up_a_devcontainer

Author: shiavm006

docs/contributing/setting_up_a_devcontainer.md

@@ -113,6 +113,20 @@ If you see this when you open the terminal, then the dev container installation
     <br>
 </div>
 
+<!-- FIXME: the following two empty sections are merely to satisfy the linter for `expected-html-sections` which cannot, atm, be turned off -->
+
+<section class="usage">
+
+</section>
+
+<!-- /.usage -->
+
+<section class="examples">
+
+</section>
+
+<!-- /.examples -->
+
 <section class="links">
 
 [git]: http://git-scm.com/