[gnome-build-meta/mcatanzaro/readme] Fix code in README

[Marge Bot <marge-bot src gnome org>]

commit e056ece335db03986c99cab44554fa47b6db600c
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Wed Jun 2 21:22:29 2021 +0000

    Fix code in README
    
    This isn't markdown, it's reStructuredText.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-build-meta/-/merge_requests/1163>

 README.rst | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)
---
diff --git a/README.rst b/README.rst
index 729ee696..fdfddba7 100644
--- a/README.rst
+++ b/README.rst
@@ -7,10 +7,8 @@ The content of this repository is a `BuildStream <https://wiki.gnome.org/Project
 project. Instructions for building GNOME can be `found here 
<https://wiki.gnome.org/Newcomers/BuildSystemComponent>`_.
 
 To build a runtime locally, for debugging:
-
-```
-$ bst build flatpak-runtimes.bst
-$ bst checkout flatpak-runtimes.bst repo
-$ flatpak remote-add --user --no-gpg-verify testrepo repo
-$ flatpak install testrepo org.gnome.Platform
-```
+::
+  $ bst build flatpak-runtimes.bst
+  $ bst checkout flatpak-runtimes.bst repo
+  $ flatpak remote-add --user --no-gpg-verify testrepo repo
+  $ flatpak install testrepo org.gnome.Platform