docs: add front matter title to deprecated.md

Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>

Author: dvdksn

docs/deprecated.md

@@ -1,4 +1,6 @@
 ---
+title: Deprecated Docker Engine features
+linkTitle: Deprecated features
 aliases: ["/engine/misc/deprecated/"]
 description: "Deprecated Features."
 keywords: "docker, documentation, about, technology, deprecate"
@@ -13,8 +15,6 @@ keywords: "docker, documentation, about, technology, deprecate"
      will be rejected.
 -->
 
-# Deprecated Engine Features
-
 This page provides an overview of features that are deprecated in Engine. Changes
 in packaging, and supported (Linux) distributions are not included. To learn
 about end of support for Linux distributions, refer to the