[release-notes/gnome-40] Use markup for keys

[Matthias Clasen <matthiasc src gnome org>]

commit f2573f8089accd48ca0afdad83abf4e092c0184d
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Mar 22 10:05:53 2021 -0400

    Use markup for keys

 help/C/index.page | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/help/C/index.page b/help/C/index.page
index a974de73..195dd246 100644
--- a/help/C/index.page
+++ b/help/C/index.page
@@ -47,9 +47,9 @@
     <p>New touchpad gestures: three finger swipe up/down opens the overview as the
     first step, and opens the app grid as the second step. Three finger swipe left
     and right switches between workspaces.</p>
-    <p>New keyboard shortcuts: Super+Alt+←/→ moves between workspaces.
-    Super+Alt+↑/↓ opens the overview and app grid. The previous shortcuts (Super
-    to open the overview, Super+PgUp/PgDown to switch workspace) will continue to
+    <p>New keyboard shortcuts: <key>Super</key>+<key>Alt</key>+<key>←</key>/<key>→</key> moves between 
workspaces.
+    <key>Super</key>+<key>Alt</key>+<key>↑</key>/<key>↓</key> opens the overview and app grid. The previous 
shortcuts (<key>Super</key>
+    to open the overview, <key>Super</key>+<key>PgUp</key>/<key>PgDown</key> to switch workspace) will 
continue to
     work.</p>
     <p>Boot and empty experience - previously we would show a blank desktop on boot.
     Instead, now we show the overview on boot and when the last window is closed on