[gnome-user-docs] .gitattributes: Trying to get GitLab to syntax highlight Mallard

[Shaun McCance <shaunm src gnome org>]

commit 8e0e4738ca48e8454006b715b0c78985a04fd027
Author: Shaun McCance <shaunm redhat com>
Date:   Sat Sep 5 19:09:02 2020 -0400

    .gitattributes: Trying to get GitLab to syntax highlight Mallard

 .gitattributes | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..5f3140b8
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+*.page gitlab-language=xml
+*.its gitlab-language=xml