Unclosed bracket fixed in documentation for #line command

docs/help.html

@@ -2056,7 +2056,7 @@ Example</span><span style='color:#AAA'>: #high </span><span style='color:#FFF'>{
 </span><span style='color:#AAA'>         </span><span style='color:#FFF'>#line background &lt;argument&gt;
 </span><span style='color:#AAA'>           Prevent new session activation.
 
-         </span><span style='color:#FFF'>#line capture &lt;variable&gt; &lt;argument.
+         </span><span style='color:#FFF'>#line capture &lt;variable&gt; &lt;argument&gt;.
 </span><span style='color:#AAA'>           Argument is executed and output stored in &lt;variable&gt;.
 
          </span><span style='color:#FFF'>#line convert &lt;argument&gt;