Fix context in p/r for 4295

Author: jwakely

xml/issue4295.xml

@@ -199,15 +199,15 @@ template <class W1, class W2>
   <ins>constexpr</ins> bool operator&lt;=(observer_ptr&lt;W1&gt; p1, observer_ptr&lt;W2&gt; p2);
 </code></pre>
 <blockquote>
--16- <i>Returns</i>: <code>not p2 &lt; p1</code>.
+-16- <i>Returns</i>: <code>not (p2 &lt; p1)</code>.
 </blockquote>
 
 <pre><code>
 template &lt;class W1, class W2&gt;
   <ins>constexpr</ins> bool operator&gt;=(observer_ptr&lt;W1&gt; p1, observer_ptr&lt;W2&gt; p2);
 </code></pre>
 <blockquote>
--16- <i>Returns</i>: <code>not p1 &lt; p2</code>.
+-16- <i>Returns</i>: <code>not (p1 &lt; p2)</code>.
 </blockquote>