Correct a unit test and location of 2 doc strings

At least, I hope it is a correction to the unit test.

Found using a pre-release version of the Eastwood Clojure lint tool.

It also found a deprecated Java method.  At least, it is deprecated in JDK 7 -- I am not sure what range of JDK versions you support with enlive:

== Linting net.cgrand.enlive-html ==
{:linter :deprecations,
 :msg
 "Instance method 'public java.net.URL java.io.File.toURL() throws java.net.MalformedURLException' is deprecated.",
 :line 98}