short ref to platfrom schema

index.html

@@ -50,6 +50,7 @@
         '/specifications/([^_].*)': 'https://raw.githubusercontent.com/hetalang/heta-specifications/master/$1',
         '/heta-case-mini/': 'https://raw.githubusercontent.com/insysbio/heta-case-mini/master/README',
         '/heta-compiler/': 'https://raw.githubusercontent.com/hetalang/heta-compiler/master/README',
+        '/heta-compiler/declaration-schema.json': 'https://raw.githubusercontent.com/hetalang/heta-compiler/master/src/builder/declaration-schema.json',
         '/heta-compiler/([^_].*)': 'https://raw.githubusercontent.com/hetalang/heta-compiler/master/$1',
         '/heta-compiler/_sidebar.md': '/heta-compiler-sidebar.md',
         '/heta-simulator/': 'https://raw.githubusercontent.com/hetalang/HetaSimulator.jl/master/README',