[FIX] tutorials/discover_js_framework: fix example link for reactive

closes #14666

X-original-commit: 84dc025
Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>

Author: AntoineVDV

content/developer/tutorials/discover_js_framework/02_build_a_dashboard.rst

@@ -312,8 +312,8 @@ changes.
 .. seealso::
   - `Documentation on reactivity <{OWL_PATH}/doc/reference/reactivity.md>`_
   - `Example: Use of reactive in a service
-    <https://github.com/odoo/odoo/blob/1f4e583ba20a01f4c44b0a4ada42c4d3bb074273/
-    addons/web/static/src/core/debug/profiling/profiling_service.js#L30>`_
+    <https://github.com/odoo/odoo/blob/bb1b5aed9b6d96ae1b0d044341812b51ed72a05d/
+    addons/mail/static/src/discuss/call/common/rtc_service.js#L124>`_
 
 8. Lazy loading the dashboard
 =============================