Update d/copyright

debian/copyright

-Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: ruby-openid
 Source: http://www.openidenabled.com/ruby-openid/
 Comment: the source has been repacked to remove the convienence copy of the
@@ -6,11 +6,11 @@ Comment: the source has been repacked to remove the convienence copy of the
  the ruby-hmac package.
 
 Files: *
-Copyright: 2006-2008 by JanRain, Inc.
+Copyright: 2006-2008, by JanRain, Inc.
 License: Apache-2.0
 
 Files: lib/openid/yadis/htmltokenizer.rb
-Copyright: 2004 Ben Giddings
+Copyright: 2004, Ben Giddings
 License: Ruby or GPL-2
 
 Files: examples/rails_openid/public/javascripts/*.js
@@ -23,9 +23,10 @@ License: Expat
 Comment: License referred to as MIT license.
 
 Files: debian/*
-Copyright: 2007 Antonio Terceiro <terceiro@softwarelivre.org>
-           2012, 2014 Cédric Boutillier <boutil@debian.org>
-           2012 Paul van Tilburg <paulvt@debian.org>
+Copyright: 2007, Antonio Terceiro <terceiro@softwarelivre.org>
+           2012, Cédric Boutillier <boutil@debian.org>
+           2012, Paul van Tilburg <paulvt@debian.org>
+           2019, Utkarsh Gupta <guptautkarsh2102@gmail.com>
 License: Apache-2.0
 
 License: Apache-2.0