Fixed typo and added leading space

docs/_includes/css/helpers.html

@@ -40,9 +40,9 @@
 <p class="bg-warning">...</p>
 <p class="bg-danger">...</p>
 {% endhighlight %}
- <div class="bs-callout bs-callout-info">
+  <div class="bs-callout bs-callout-info">
     <h4>Dealing with specificity</h4>
-    <p>Sometimes contextual background classeses cannot be applied due to the specificity of another selector. In some cases, a sufficient workaround is to wrap your element's content in a <code>&lt;div&gt;</code> with the class.</p>
+    <p>Sometimes contextual background classes cannot be applied due to the specificity of another selector. In some cases, a sufficient workaround is to wrap your element's content in a <code>&lt;div&gt;</code> with the class.</p>
   </div>
 
   <h3 id="helper-classes-close">Close icon</h3>