Update go1.18.html

Author: neilalexander

doc/go1.18.html

@@ -254,11 +254,10 @@ <h3 id="minor_library_changes">Minor changes to the library</h3>
 <dl id="net/http"><dt><a href="/pkg/net/http/">net/http</a></dt>
   <dd>
     <p><!-- CL 330852 -->
-      The <code>Dial</code>, <code>DialContext</code>, <code>DialTLS</code> and
-      <code>DialTLSContext</code> method fields in
+      On WebAssembly targets, the <code>Dial</code>, <code>DialContext</code>,
+      <code>DialTLS</code> and <code>DialTLSContext</code> method fields in
       <a href="/pkg/net/http/#Transport"><code>Transport</code></a>
-      will now be correctly used, if specified, for making HTTP requests when running
-      on WebAssembly targets.
+      will now be correctly used, if specified, for making HTTP requests.
     </p>
     <p><!-- CL 338590 -->
       TODO: <a href="https://golang.org/cl/338590">https://golang.org/cl/338590</a>: add Cookie.Valid method