Fix typos in crypto.subtle.wrapKey

Author: twiss

spec/Overview.html

@@ -2626,15 +2626,15 @@ <h4>The wrapKey method</h4>
                     that is marked as non-extractable using the {{JsonWebKey/ext}} JWK member.
                   </p>
                   <p>
-                    However, the unwrapKey method <em>does</em> support the JsonWebKey/ext}} JWK member,
+                    However, the unwrapKey method <em>does</em> support the {{JsonWebKey/ext}} JWK member,
                     so that wrapped non-extractable keys created elsewhere, for example by a server, can be
                     unwrapped using this API.
                   </p>
                 </div>
               </li>
               <li>
                 <p>
-                  Let |key| be the result of performing the export key operation specified
+                  Let |key| be the result of performing the export key operation specified by
                   the {{CryptoKey/[[algorithm]]}} internal slot of
                   |key| using |key| and |format|.
                 </p>