Merge pull request #14 from showaltb/fix-readme-link

Fix link in README

Author: mnapoli

README.md

@@ -58,7 +58,7 @@ This repository contains the following differences with the original Serverless
 - [Resources](./docs/guides/resources.md)
 - [Composing services](./docs/guides/compose.md)
 - [Workflow Tips](./docs/guides/workflow.md)
-- [Serverless.yml Reference](./docs/guides/serverless.yml)
+- [Serverless.yml Reference](./docs/guides/serverless.yml.md)
 
 # Function events