Use 'saveHTML' when generating HTML from a DOMDocument.

This primarily occurs when modifying article content.  If 'saveXML' is
used following 'loadHTML' there is the possibility of strangeness, such
as a self-closing anchor tag.

Note that the DOMDocument used in 'classes/feeditem/atom.php' came from
'loadXML', but we use 'saveHTML' since we're returning HTML content.

plugins/af_fsckportal/init.php

@@ -37,7 +37,7 @@ class Af_Fsckportal extends Plugin {
 					}
 				}
 
-				$article["content"] = $doc->saveXML();
+				$article["content"] = $doc->saveHTML();
 
 		}
 
@@ -48,4 +48,4 @@ class Af_Fsckportal extends Plugin {
 		return 2;
 	}
 
-}
+}