[gjs: 4/5] doc: fix link to get SpiderMonkey

[Philip Chimento <pchimento src gnome org>]

commit 6a43fb449b3b915c9a6c5dd73c1425ea646fbed8
Author: Sonny Piers <sonny fastmail net>
Date:   Sat Apr 4 20:22:15 2020 +0200

    doc: fix link to get SpiderMonkey

 doc/Hacking.md | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/doc/Hacking.md b/doc/Hacking.md
index 714fe776..18794d96 100644
--- a/doc/Hacking.md
+++ b/doc/Hacking.md
@@ -32,8 +32,7 @@ These debugging features reduce performance by quite a lot, but they
 will help catch mistakes in the API that could otherwise go unnoticed
 and cause crashes in gnome-shell later on.
 
-To build SpiderMonkey, follow the instructions on [this page][embedder]
-to download the source code and build the library.
+To build SpiderMonkey, follow the instructions on [this 
page](https://github.com/mozilla-spidermonkey/spidermonkey-embedding-examples/blob/esr68/docs/Building%20SpiderMonkey.md)
 to download the source code and build the library.
 If you are using `-Dprefix` to build GJS into a different path, then
 make sure to use the same build prefix for SpiderMonkey with `--prefix`.