[gnome-books] Use markdown for image embed and enclose links in "<>"

[Niels De Graef <nielsdg src gnome org>]

commit 2a99c1536b2b93f4f425e1c18c2b8bf2e8b7eb85
Author: Roger <sachanroger gmail com>
Date:   Mon Sep 2 16:09:50 2019 +0000

    Use markdown for image embed and enclose links in "<>"

 README.md | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)
---
diff --git a/README.md b/README.md
index c148f729..c4ada5b3 100644
--- a/README.md
+++ b/README.md
@@ -2,14 +2,11 @@
 
 Books is an e-book manager application for GNOME.
 
-<a href='https://flathub.org/apps/details/org.gnome.Books'><img width='240' alt='Download on Flathub' 
src='https://flathub.org/assets/badges/flathub-badge-i-en.png'/></a>
+[![Download on 
Flathub](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Flathub-badge-en.svg/240px-Flathub-badge-en.svg.png)](https://flathub.org/apps/details/org.gnome.Books)
 
 ## Useful links
 
-- Homepage: https://wiki.gnome.org/Apps/Books
-
-- Report issues: https://gitlab.gnome.org/GNOME/gnome-books/issues/
-
-- Donate: https://www.gnome.org/friends/
-
-- Translate: https://wiki.gnome.org/TranslationProject
\ No newline at end of file
+- Homepage: <https://wiki.gnome.org/Apps/Books>
+- Report issues: <https://gitlab.gnome.org/GNOME/gnome-books/issues/>
+- Donate: <https://www.gnome.org/friends/>
+- Translate: <https://wiki.gnome.org/TranslationProject>
\ No newline at end of file