[gnome-documents] appdata: Mark developer_name for translation

[Piotr Drąg <piotrdrag src gnome org>]

commit 4c2caa41e619407317a1861358dd74f925d3be4a
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Aug 19 16:48:35 2017 +0200

    appdata: Mark developer_name for translation

 data/org.gnome.Books.appdata.xml.in     |    2 +-
 data/org.gnome.Documents.appdata.xml.in |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/data/org.gnome.Books.appdata.xml.in b/data/org.gnome.Books.appdata.xml.in
index 865ecc5..0fbc370 100644
--- a/data/org.gnome.Books.appdata.xml.in
+++ b/data/org.gnome.Books.appdata.xml.in
@@ -29,7 +29,7 @@
   <url type="donation">http://www.gnome.org/friends</url>
   <url type="homepage">https://wiki.gnome.org/Apps/Books</url>
   <url type="translate">https://wiki.gnome.org/TranslationProject</url>
-  <developer_name>The GNOME Project</developer_name>
+  <_developer_name>The GNOME Project</_developer_name>
   <updatecontact>debarshir_at_gnome.org</updatecontact>
   <screenshots>
     <screenshot type="default">
diff --git a/data/org.gnome.Documents.appdata.xml.in b/data/org.gnome.Documents.appdata.xml.in
index 45d2ef2..7291f1d 100644
--- a/data/org.gnome.Documents.appdata.xml.in
+++ b/data/org.gnome.Documents.appdata.xml.in
@@ -36,7 +36,7 @@
   <url type="donation">http://www.gnome.org/friends</url>
   <url type="homepage">https://wiki.gnome.org/Apps/Documents</url>
   <url type="translate">https://wiki.gnome.org/TranslationProject</url>
-  <developer_name>The GNOME Project</developer_name>
+  <_developer_name>The GNOME Project</_developer_name>
   <updatecontact>debarshir_at_gnome.org</updatecontact>
   <screenshots>
     <screenshot type="default">