Merge pull request #136 from kepano/master

Fix issue with full HTML + DOCTYPE being inserted

_plugins/open_external_links_in_new_tab.rb

@@ -23,6 +23,6 @@ def convert_links(doc)
     parsed_doc.css("a:not(.internal-link):not(.footnote):not(.reversefootnote)").each do |link|
       link.set_attribute('target', '_blank')
     end
-    doc.content = parsed_doc.to_html
+    doc.content = parsed_doc.inner_html
   end
 end