[libnotify] docs: Use consistent IDs in spec build

[Marco Trevisan <marcotrevi src gnome org>]

commit 7f31e29e62f4e78bcf1c2ef7fb3946441dd98735
Author: David King <amigadave amigadave com>
Date:   Mon Dec 13 15:20:32 2021 +0000

    docs: Use consistent IDs in spec build
    
    This avoids differences between IDs for separate builds of the
    specification.

 docs/config.xsl | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/docs/config.xsl b/docs/config.xsl
index 7aa9def..59490e7 100644
--- a/docs/config.xsl
+++ b/docs/config.xsl
@@ -3,4 +3,5 @@
                 xmlns:fo="http://www.w3.org/1999/XSL/Format";
                 version="1.0">
   <xsl:param name="html.stylesheet" select="'docbook.css'"/>
+  <xsl:param name="generate.consistent.ids" select="1"/>
 </xsl:stylesheet>