Update bk-frontend-dev-guide.md (magento#2175)

neeta-wagento · bdenham · commit aee7bed17ec2 · 2018-06-12T12:02:09.000-05:00
diff --git a/guides/v2.1/frontend-dev-guide/bk-frontend-dev-guide.md b/guides/v2.1/frontend-dev-guide/bk-frontend-dev-guide.md
@@ -22,7 +22,7 @@ Frontend developers can use this guide to create custom themes to tailor the Mag
 <ul>
 <li><p>You can make relatively simple changes to your site using cascading style sheets (CSS) to change colors and the look-and-feel of various interface components, replacing images, and other relatively cosmetic changes.</p>
 <p>No structural changes are made to pages&mdash;you accept the structure of the site provided by default by modules you load on to your site.</p>
-<p>This can be a good starting point for a site as it is requires the least effort and knowledge.</p></li>
+<p>This can be a good starting point for a site as it requires the least effort and knowledge.</p></li>
 <li><p>A small step beyond changing {% glossarytooltip 6c5cb4e9-9197-46f2-ba79-6147d9bfe66d %}CSS{% endglossarytooltip %} and images on your site is to make changes to the {% glossarytooltip a2aff425-07dd-4bd6-9671-29b7edefa871 %}HTML{% endglossarytooltip %} generated by existing modules.</p>
 <p>This requires rudimentary {% glossarytooltip bf703ab1-ca4b-48f9-b2b7-16a81fd46e02 %}PHP{% endglossarytooltip %} skills to adjust {% glossarytooltip ae0f1f68-c466-4189-88fd-6cd8b23c804f %}PHTML{% endglossarytooltip %} template files.</p>
 <p>Although PHP coding is involved, this is typically copying and pasting small fragments of PHP code from existing template files into a new template file with differently structured HTML.</p>
