[librsvg] doc/Makefile.am: Generate in xml mode

[Federico Mena Quintero <federico src gnome org>]

commit f822e90c7a91f12c76793ffe8e349584d4d813f8
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Dec 8 15:56:15 2017 -0600

    doc/Makefile.am: Generate in xml mode

 doc/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 4620dcf..d0c7cef 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -31,7 +31,7 @@ SCAN_OPTIONS = --deprecated-guards="RSVG_DISABLE_DEPRECATED"
 
 # Extra options to supply to gtkdoc-mkdb.
 # e.g. MKDB_OPTIONS=--sgml-mode --output-format=xml
-MKDB_OPTIONS = --sgml-mode --output-format=xml --name-space=rsvg
+MKDB_OPTIONS = --xml-mode --output-format=xml --name-space=rsvg
 
 # Extra options to supply to gtkdoc-mktmpl
 # e.g. MKTMPL_OPTIONS=--only-section-tmpl