Fix "http://schema.org" processing.

Convert both "http://schema.org/" and "http://schema.org" to
"https://schema.org/".

Author: davidlehn

Diff for: playground/1.0/playground.js

@@ -1467,7 +1467,7 @@
         }
       }
       // rewrite URLs that we know have secure JSON-LD Contexts
-      if(url === 'http://schema.org/') {
+      if(url === 'http://schema.org/' || url === 'http://schema.org') {
         url = 'https://schema.org/';
       }
 

Diff for: playground/playground.js

@@ -1597,7 +1597,7 @@
         }
       }
       // rewrite URLs that we know have secure JSON-LD Contexts
-      if(url === 'http://schema.org/') {
+      if(url === 'http://schema.org/' || url === 'http://schema.org') {
         url = 'https://schema.org/';
       }