json-c: update homepage

Closes Homebrew/homebrew#14858.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/json-c.rb

@@ -1,12 +1,13 @@
 require 'formula'
 
 class JsonC < Formula
+  homepage 'https://github.com/json-c/json-c/wiki'
   url 'http://oss.metaparadigm.com/json-c/json-c-0.9.tar.gz'
-  homepage 'http://oss.metaparadigm.com/json-c/'
   sha1 'daaf5eb960fa98e137abc5012f569b83c79be90f'
 
   def install
-    system "./configure", "--prefix=#{prefix}", "--disable-dependency-tracking"
+    system "./configure", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}"
     system "make install"
   end
 end