use https in url

[ci skip]

Author: jgabry

DESCRIPTION

@@ -9,14 +9,14 @@ Authors@R: c(person("Jonah", "Gabry", role = c("aut", "cre"), email = "jsg2201@c
              person("Martin", "Modrák", role = "ctb"), 
              person("Malcolm", "Barrett", role = "ctb"))
 Maintainer: Jonah Gabry <jsg2201@columbia.edu>
-Description: Plotting functions for posterior analysis, model checking,
+Description: Plotting functions for posterior analysis, posterior predictive checks,
     and MCMC diagnostics. The package is designed not only to provide convenient
     functionality for users, but also a common set of functions that can be
     easily used by developers working on a variety of R packages for Bayesian
     modeling, particularly (but not exclusively) packages interfacing with 'Stan'.
 License: GPL (>= 3)
 LazyData: TRUE
-URL: http://mc-stan.org/bayesplot
+URL: https://mc-stan.org/bayesplot
 BugReports: https://github.com/stan-dev/bayesplot/issues/
 SystemRequirements: pandoc (>= 1.12.3), pandoc-citeproc
 Depends: