Add missing comma to WAF redirects file (#717)

Author: im2nguyen

content/well-architected-framework/redirects.jsonc

@@ -164,7 +164,7 @@
     "source": "/well-architected-framework/ir-terraform/implementation-resources-packer-reliability",
     "destination": "/well-architected-framework/implementation-resources/implementation-resources-packer-reliability",
     "permanent": true
-  }
+  },
   //
   // Reference architecture
   //