Update article.md

paroche · web-flow · commit 4452139ca00f · 2019-10-17T23:10:07.000-06:00
Changed 'XHTML' to 'in XML mode' in title to match contents. 'XHTML' isn't mentioned anywhere else in the article except in that title. So either change it to 'XML' or explain the relationship?
diff --git a/2-ui/1-document/05-basic-dom-node-properties/article.md b/2-ui/1-document/05-basic-dom-node-properties/article.md
@@ -187,7 +187,7 @@ For instance, let's compare `tagName` and `nodeName` for the `document` and a co
 
 If we only deal with elements, then we can use both `tagName` and `nodeName` - there's no difference.
 
-```smart header="The tag name is always uppercase except XHTML"
+```smart header="The tag name is always uppercase except in XML mode"
 The browser has two modes of processing documents: HTML and XML. Usually the HTML-mode is used for webpages. XML-mode is enabled when the browser receives an XML-document with the header: `Content-Type: application/xml+xhtml`.
 
 In HTML mode `tagName/nodeName` is always uppercased: it's `BODY` either for `<body>` or `<BoDy>`.
