Use secure copyright file specification URI.

Fixes: lintian: insecure-copyright-format-uri
See-also: https://lintian.debian.org/tags/insecure-copyright-format-uri.html

debian/changelog

@@ -5,6 +5,7 @@ ruby-hashie (3.5.5-3) UNRELEASED; urgency=medium
 
   [ Debian Janitor ]
   * Trim trailing whitespace.
+  * Use secure copyright file specification URI.
 
  -- Utkarsh Gupta <guptautkarsh2102@gmail.com>  Tue, 13 Aug 2019 05:35:57 +0530
 

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: hashie
 Source: http://rubygems.org/gems/hashie