[yelp-xsl] html.xsl: Typo fix in doc comment

[Shaun McCance <shaunm src gnome org>]

commit b011ca7f0d1b697eb9758b3537272a0fec4252e2
Author: Shaun McCance <shaunm redhat com>
Date:   Fri Jul 7 12:04:37 2017 -0400

    html.xsl: Typo fix in doc comment

 xslt/common/html.xsl |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/xslt/common/html.xsl b/xslt/common/html.xsl
index 342ec4c..0a3282f 100644
--- a/xslt/common/html.xsl
+++ b/xslt/common/html.xsl
@@ -1987,7 +1987,7 @@ $node: The node to create JavaScript for.
 
 This template outputs an HTML #{script} tag to reference MathJax. It only
 outputs a #{script} element if ${node} has MathML descendent content. By
-default, this template uses #{cnd.mathjax.org}. If you wish to use a local
+default, this template uses #{cdn.mathjax.org}. If you wish to use a local
 copy, override this template and provide the necessary files.
 -->
 <xsl:template name="html.js.mathjax">