Update miniconda2.rb (#4443)

Casks/miniconda2.rb

@@ -2,9 +2,10 @@ cask 'miniconda2' do
   version :latest
   sha256 :no_check
 
+  # repo.continuum.io/miniconda was verified as official when first introduced to the cask
   url 'https://repo.continuum.io/miniconda/Miniconda2-latest-MacOSX-x86_64.sh'
   name 'Continuum Analytics Miniconda'
-  homepage 'https://www.continuum.io/what-is-anaconda'
+  homepage 'https://www.anaconda.com/what-is-anaconda/'
 
   auto_updates true
   depends_on macos: '>= :lion'