Remove the redundant `role=navigation` from `nav`s.

diff --git a/docs/4.0/components/breadcrumb.md b/docs/4.0/components/breadcrumb.md
index 928ae101ffc3d9987902c978eb3c4679fa99d76e..2cbcc17b9e108a81fc6ddab741db42839d58d0b0 100644 (file)
--- a/docs/4.0/components/breadcrumb.md
+++ b/docs/4.0/components/breadcrumb.md
@@ -10,20 +10,20 @@ group: components
 Separators are automatically added in CSS through [`::before`](https://developer.mozilla.org/en-US/docs/Web/CSS/::before) and [`content`](https://developer.mozilla.org/en-US/docs/Web/CSS/content).
 
 {% example html %}
-<nav aria-label="breadcrumb" role="navigation">
+<nav aria-label="breadcrumb">
   <ol class="breadcrumb">
     <li class="breadcrumb-item active" aria-current="page">Home</li>
   </ol>
 </nav>
 
-<nav aria-label="breadcrumb" role="navigation">
+<nav aria-label="breadcrumb">
   <ol class="breadcrumb">
     <li class="breadcrumb-item"><a href="#">Home</a></li>
     <li class="breadcrumb-item active" aria-current="page">Library</li>
   </ol>
 </nav>
 
-<nav aria-label="breadcrumb" role="navigation">
+<nav aria-label="breadcrumb">
   <ol class="breadcrumb">
     <li class="breadcrumb-item"><a href="#">Home</a></li>
     <li class="breadcrumb-item"><a href="#">Library</a></li>