fixing label for sign in button

Author: sjv01180

app/views/layouts/_nav.html.erb

@@ -26,8 +26,8 @@
         <% end %>
       <% end %>
       <div class="nav__signup__button">
-      <%= btn_link_to "Sign in", "https://apply.brickhack.io/users/sign_in" %>
-    </div>
+        <%= btn_link_to "Sign In", "https://apply.brickhack.io/users/sign_in" %>
+      </div>
       <!-- %a.nav__link{ href: "https://brickhackv.devpost.com", target: 'blank' }= 'Prizes' -->
     </div>
   </div>