docs callout for #13219

docs/_includes/components/labels.html

@@ -32,4 +32,9 @@
 <span class="label label-warning">Warning</span>
 <span class="label label-danger">Danger</span>
 {% endhighlight %}
+
+  <div class="bs-callout bs-callout-info">
+    <h4>Have tons of labels?</h4>
+    <p>Rendering problems can arise when you have dozens of inline labels within a narrow container, each containing it's own <code>inline-block</code> element (like an icon). The way around this is setting <code>display: inline-block;</code>. For context and an example, <a href="https://github.com/twbs/bootstrap/issues/13219">see #13219</a>.</p>
+  </div>
 </div>