.help-block talks about being 'longer', but with .help-inline gone, it's not longer than anything and the comparison is confusing.
<p>Block level help text for form controls.</p>
<form class="bs-example">
<input type="text" class="form-control">
- <span class="help-block">A longer block of help text that breaks onto a new line and may extend beyond one line.</span>
+ <span class="help-block">A block of help text that breaks onto a new line and may extend beyond one line.</span>
</form>
{% highlight html %}
-<span class="help-block">A longer block of help text that breaks onto a new line and may extend beyond one line.</span>
+<span class="help-block">A block of help text that breaks onto a new line and may extend beyond one line.</span>
{% endhighlight %}
</div>