[tracker/sam/website-wikipedia] website: Add Wikipedia link

[Sam Thursfield <sthursfield src gnome org>]

commit 5c6f15ce7f1f74c9a31f7dc51f535e091cba8ed0
Author: Sam Thursfield <sam afuera me uk>
Date:   Tue Jul 21 17:10:40 2020 +0200

    website: Add Wikipedia link

 docs/website/overview.md | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/docs/website/overview.md b/docs/website/overview.md
index 048520b53..d20a2d94f 100644
--- a/docs/website/overview.md
+++ b/docs/website/overview.md
@@ -100,3 +100,6 @@ KDE, implemented using Xapian.
 [Apache Lucene + Solr](http://lucene.apache.org/) is a search engine which
 targets very large-scale workloads. It has a much heavier footprint compared to
 Tracker.
+
+See the Wikipedia article on [Desktop
+search](https://en.wikipedia.org/wiki/Desktop_search) for more information.