gingerbread HttpURLConnection docs should look better

the gingerbread HttpURLConnection docs don't look as good as they should.

1. there's a missing } that appears in the source but not in the HTML:

      readStream(in);
!    finally {
      urlConnection.disconnect();

2. there are missing gaps between paragraphs and the following PRE. (the 
"Network Sign-On" code sample, say.)

3. there are trailing blank lines in PREs. (the "Performance" code sample, say.)

as far as i can tell, the .java is fine; it bends over backwards to do the 
right thing, even though it's a PITA. this bug isn't asking for a better input 
format --- this bug is just asking for doclava to do the right thing with 
regular javadoc-style input.

Original issue reported on code.google.com by e...@google.com on 2 Dec 2010 at 10:05

Cheaterman03 / doclava

gingerbread HttpURLConnection docs should look better #26