[release-notes] Update tracker content

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 02360c99704a7533fd870e6331299fdf0ecceb2c
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Fri Sep 4 12:26:35 2020 -0500

    Update tracker content

 help/C/developers.page | 1 -
 help/C/index.page      | 6 +++++-
 2 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/help/C/developers.page b/help/C/developers.page
index 708cb993..cff2b8cd 100644
--- a/help/C/developers.page
+++ b/help/C/developers.page
@@ -71,7 +71,6 @@
     including the <code>SERVICE {}</code> statement, which allows one database
     to query from another.</p>
     <p>The tracker3 commandline tool has also seen many improvements.</p>
-    <p>XXX we still have tracker 2 as well. sthursfield to update this
   </section>
 
   <section id="gjs">
diff --git a/help/C/index.page b/help/C/index.page
index e3c2740e..0c4765dd 100644
--- a/help/C/index.page
+++ b/help/C/index.page
@@ -153,7 +153,11 @@
       <item><p>The system menu has a new <gui style="menuitem">Restart</gui>
       option, which also can be used to go to the Boot menu by holding down the
       <key>Alt</key> key.</p></item>
-      <item><p>XXX tracker features for users</p></item>
+      <item><p>GNOME 3.38 features the new Tracker 3 alongside Tracker 2. The
+      majority of GNOME's core apps are updated to use Tracker 3. Major
+      improvements in the Tracker 3 search engine and database make the Flatpak
+      application sandbox more secure by allowing control over what kinds of
+      data your apps can search and query.</p></item>
     </list>
   </section>