[gnome-system-monitor] Add the memory maps help page (refs #161)

[Robert Roth <robertroth src gnome org>]

commit 368768ce6d1ad13139ee9b035176e86c8773f97d
Author: Robert Roth <robert roth off gmail com>
Date:   Sun Oct 18 10:25:19 2020 +0300

    Add the memory maps help page (refs #161)

 help/C/{memory-map-what.page.stub => memory-map-what.page} | 2 +-
 help/meson.build                                           | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/help/C/memory-map-what.page.stub b/help/C/memory-map-what.page
similarity index 98%
rename from help/C/memory-map-what.page.stub
rename to help/C/memory-map-what.page
index c808962c..73bd0bdf 100644
--- a/help/C/memory-map-what.page.stub
+++ b/help/C/memory-map-what.page
@@ -4,7 +4,7 @@
 
   <info>
     <revision pkgversion="3.11" date="2014-01-28" status="candidate"/>
-    <link type="guide" xref="index" group="memory" />
+    <link type="guide" xref="index#memory" group="memory" />
 
     <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
 
diff --git a/help/meson.build b/help/meson.build
index 59f90670..d065bcc9 100644
--- a/help/meson.build
+++ b/help/meson.build
@@ -13,6 +13,7 @@ gnome.yelp(meson.project_name(),
     'mem-check.page',
     'mem-swap.page',
     'memory-map-use.page',
+    'memory-map-what.page',
     'net-bits.page',
     'process-explain.page',
     'process-files.page',