This issue occurs in a few places on http://docs.oracle.com/javaee/6/tutorial/doc/bnarf.html entitled "Adding Components to a Page Using HTML Tags". This issue is in the third column of "Table 7-1 The Component Tags"
There are examples of renderings such as <input type=type>. However, these are actually output as quoted attributes so <input type="type"> is more accurate. Unquoted attributes are only valid in regular SGML-based HTML, not the more modern XHTML where it isn't even considered well-formed XML and would cause a parse error if it were actually rendered that way and processed through an XML parser.