[aravis] build: fix appdata

[Emmanuel Pacaud <emmanuel src gnome org>]

commit 8e548d46f8a37faa3dea6195dc4d1dfe648b9579
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Thu Nov 19 09:51:23 2015 +0100

    build: fix appdata

 viewer/data/arv-viewer.appdata.xml.in |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/viewer/data/arv-viewer.appdata.xml.in b/viewer/data/arv-viewer.appdata.xml.in
index eb22551..08e9438 100644
--- a/viewer/data/arv-viewer.appdata.xml.in
+++ b/viewer/data/arv-viewer.appdata.xml.in
@@ -4,16 +4,16 @@
        <id type="desktop">arv-viewer.desktop</id>
        <metadata_license>CC0-1.0</metadata_license>
        <project_license>GPL-2.0+</project_license>
-       <_name>Aravis Viewer</_name>
-       <_summary>Simple viewer of video stream acquired using Aravis</_summary>
+       <name>Aravis Viewer</name>
+       <summary>Simple viewer of video stream acquired using Aravis</summary>
        <description>
-               <_p>
+               <p>
                        Aravis Viewer is a simple viewer used to display video streams from
                        GENICAM-based Ethernet industrial cameras.
-               </_p>
-               <_p>
+               </p>
+               <p>
                        It allows to control basic acquisition parameters, i.e. framerate, exposure and gain, 
and to save raw still images.
-               </_p>
+               </p>
        </description>
        <screenshots>
                <screenshot type="default" width="1024" 
height="576">https://git.gnome.org/browse/aravis/plain/viewer/data/aravis.png</screenshot>