[grilo] docs: Update document on how to build using meson

[Victor Toso <victortoso src gnome org>]

commit 8d700b189aec3e1ef04f5f07035b9141035f1b03
Author: Thiago Mendes <thiago posteo de>
Date:   Wed Sep 26 18:48:09 2018 +0200

    docs: Update document on how to build using meson
    
    The documentation on how to build Grilo was out-of-date after the port
    from autotools to meson. This commit also contains the update needed
    after the migration to the gitlab.gnome.org

 doc/grilo/quick-start.xml | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)
---
diff --git a/doc/grilo/quick-start.xml b/doc/grilo/quick-start.xml
index 16896f7..10aa608 100644
--- a/doc/grilo/quick-start.xml
+++ b/doc/grilo/quick-start.xml
@@ -23,19 +23,19 @@
     <title>Building Grilo from sources</title>
     <programlisting>
 # Building Grilo
-$ git clone git://git.gnome.org/grilo
+$ git clone https://gitlab.gnome.org/GNOME/grilo.git
 $ cd grilo
-$ ./autogen.sh --prefix=/usr
-$ make
-$ sudo make install
+$ meson . build
+$ ninja -C build
+$ sudo ninja -C build install
 
 # Building Grilo Plugins
 $ cd ..
-$ git clone git://git.gnome.org/grilo-plugins
+$ git clone https://gitlab.gnome.org/GNOME/grilo-plugins.git
 $ cd grilo-plugins
-$ ./autogen.sh --prefix=/usr
-$ make
-$ sudo make install
+$ meson . build
+$ ninja -C build
+$ sudo ninja -C build install
     </programlisting>
 
   <para>