[tracker: 1/2] docs: fix broken links in website

[Sam Thursfield <sthursfield src gnome org>]

commit ef93571980e4fb456534dfcb554e393c5193155b
Author: Nishit Patel <nishitlimbani130 gmail com>
Date:   Tue Jun 22 20:41:03 2021 +0530

    docs: fix broken links in website
    
    directory urls no longer work by default, and `site_urls`
    config option has be made compulsory config option, since version 1.2 of
    Mkdocs and if `site_urls` option is not defined then `use_directory_urls` is set
    to false leading to broken links
    
    Mkdocs Release Notes: https://www.mkdocs.org/about/release-notes/#backward-incompatible-changes-in-12
    
    Fixes: #317

 docs/mkdocs.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/docs/mkdocs.yml b/docs/mkdocs.yml
index b2838e14c..8c94d62ee 100644
--- a/docs/mkdocs.yml
+++ b/docs/mkdocs.yml
@@ -1,6 +1,7 @@
 site_name: Tracker
 theme: cinder
 docs_dir: ./website
+site_url: https://gnome.pages.gitlab.gnome.org/tracker/
 
 nav:
   - Home: 'index.md'