Update marketplace links

Link to the site instead of zap-extensions.

Signed-off-by: thc202 <[email protected]>

Author: thc202

addOns/help/src/main/javahelp/contents/start/features/addons.html

@@ -48,7 +48,7 @@ <H2>See also</H2>
 <tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>
 <a href="features.html">Features</a></td><td>provided by ZAP</td></tr>
 <tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>
-https://github.com/zaproxy/zap-extensions/</td><td>to browse the add-ons online</td></tr>
+<a href="https://www.zaproxy.org/addons/">Marketplace</a></td><td>to browse the add-ons online</td></tr>
 </table>
 
 </BODY>

addOns/help/src/main/javahelp/contents/ui/dialogs/manageaddons.html

@@ -31,7 +31,7 @@ <H2>Marketplace</H2>
 
 <H2>Manual loading</H2>
 When working in a disconnected environment, you may want to manually download and install an add-on. <br/>
-All add-ons in the marketplace can be downloaded from the release page on <a href="https://github.com/zaproxy/zap-extensions/releases">GitHub</a>.
+All add-ons in the marketplace can be downloaded from the <a href="https://www.zaproxy.org/addons/">Marketplace page</a>.
 Downloaded add-ons can be loaded to ZAP via the <a href="../tlmenu/file.html">File</a> menu.
 
 <H2>Accessed via</H2>