Update 2 files

- /_layouts/xslt_container.html
- /feed.xslt.xml

_layouts/xslt_container.html

@@ -1,5 +1,4 @@
-{% if page.layout == "xslt" %}
-<?xml version="1.0" encoding="utf-8"?>
+{% if page.layout == "xslt" %}<?xml version="1.0" encoding="utf-8"?>
 <xsl:stylesheet
     version="3.0"
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"