Update xml/issue4404.xml

Co-authored-by: Jonathan Wakely <[email protected]>

Author: tomaszkam

xml/issue4404.xml

@@ -54,7 +54,7 @@ auto s2 = to_span(r);
 static_assert(std::same_as&lt;decltype(s2), std::span&lt;const int, N&gt;&gt;); // <span style="color:red;font-weight:bolder">fire, ok after this PR</span>
 </pre></blockquote>
 <p>
-This is breaking change, and paper we need a paper with analysis.
+This is breaking change, and we need a paper with analysis.
 </p>
 </discussion>