[glib] docs: fix 'emphasis' tag

[Stefan Sauer <stefkost src gnome org>]

commit c68f66c19e41f4188587a63bd74419a1f2c3085b
Author: Stefan Sauer <ensonic users sf net>
Date:   Sun Nov 12 20:55:05 2017 +0100

    docs: fix 'emphasis' tag
    
    There is no 'em' tag in docbook. Use 'emphasis'. This would also require
    to enable --xml-mode in MKDB_OPTIONS, but that requires more cleanups.

 gio/gappinfo.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gio/gappinfo.c b/gio/gappinfo.c
index 32e9b3f..646b8ef 100644
--- a/gio/gappinfo.c
+++ b/gio/gappinfo.c
@@ -136,9 +136,9 @@ g_app_info_dup (GAppInfo *appinfo)
  *
  * Checks if two #GAppInfos are equal.
  *
- * Note that the check <em>may not</em> compare each individual field, and
- * only does an identity check. In case detecting changes in the contents
- * is needed, program code must additionally compare relevant fields.
+ * Note that the check <emphasis>may not</emphasis> compare each individual
+ * field, and only does an identity check. In case detecting changes in the 
+ * contents is needed, program code must additionally compare relevant fields.
  *
  * Returns: %TRUE if @appinfo1 is equal to @appinfo2. %FALSE otherwise.
  **/