twitter link updates and typo fix

_includes/mailchimp.html

@@ -18,6 +18,10 @@ <h3 class="mb-0">Want more Bootstrap themes &amp; templates?</h3>
             </div>
           </form>
         </div>
+        <div class="text-center mt-4">
+          <p class="text-white-50 mb-4">or get updates on Twitter</p>
+          <a href="javascript:void(0)" onclick="window.open('https://twitter.com/intent/user?original_referer=&amp;region=screen_name&amp;screen_name=SBootstrap&amp;source=followbutton&amp;variant=1.1', 'twitter', 'toolbar=no, width=450, height=600'); return false;" class="btn btn-twitter btn-xl"><i class="fab fa-twitter mr-2"></i> Follow @SBootstrap</a>
+        </div>
       </div>
     </div>
   </div>

_layouts/overview-theme.html

@@ -68,7 +68,7 @@ <h5 class="m-0">Features</h5>
       <div class="card border-0 shadow mb-4 text-center">
         <div class="card-body">
           <div class="small mb-2 font-weight-bold">Get updates when {{ page.title }} is improved!</div>
-          <a target="_blank" href="https://twitter.com/sbootstrap" class="btn btn-twitter btn-sm btn-block"><i class="fab fa-twitter"></i> Follow @SBootstrap</a>
+          <a target="_blank" href="javascript:void(0)" onclick="window.open('https://twitter.com/intent/user?original_referer=&amp;region=screen_name&amp;screen_name=SBootstrap&amp;source=followbutton&amp;variant=1.1', 'twitter', 'toolbar=no, width=450, height=600'); return false;" class="btn btn-twitter btn-sm btn-block"><i class="fab fa-twitter"></i> Follow @SBootstrap</a>
         </div>
       </div>
       <!-- Item Features -->

index.html

@@ -1,5 +1,5 @@
 ---
 layout: home
 meta-title: Free Bootstrap Themes, Templates, Snippets, and Guides
-meta-description: Start Bootstrap develops free to donwload, open source Bootstrap 4 themes, templates, and snippets and creates guides and tutorials to help you learn more about designing and developing with Bootstrap.
+meta-description: Start Bootstrap develops free to download, open source Bootstrap 4 themes, templates, and snippets and creates guides and tutorials to help you learn more about designing and developing with Bootstrap.
 ---