fix(docs): add required sections to FAQ and fix devcontainer link

Add empty usage and examples sections to satisfy expected-html-sections
linter. Fix devcontainer-setup link to point to correct file path.

Author: shiavm006

docs/contributing/FAQ.md

@@ -381,6 +381,20 @@ For more `make` commands, refer to the [documentation][benchmark] on running ben
 - [Git Cheatsheet][git-guide]
 - [Other make commands][make-commands]
 
+<!-- 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/
@@ -401,7 +415,7 @@ For more `make` commands, refer to the [documentation][benchmark] on running ben
 
 [manual-setup]: https://github.com/stdlib-js/stdlib/blob/develop/CONTRIBUTING.md#step-0-github
 
-[devcontainer-setup]: https://github.com/stdlib-js/stdlib/blob/87cbd67623892f90ddeea94e1d4e01eeada417b5/docs/devcontainer_setup.md
+[devcontainer-setup]: https://github.com/stdlib-js/stdlib/blob/develop/docs/contributing/setting_up_a_devcontainer.md
 
 [devcontainer-issue]: https://github.com/stdlib-js/stdlib/issues/4934