Link working version of the specification

justinabrahms · justinabrahms · commit aa120bdc515b · 2022-08-29T11:20:13.000-07:00
diff --git a/README.md b/README.md
@@ -3,12 +3,12 @@
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+[![Specification](https://img.shields.io/static/v1?label=Specification&message=v0.4.0&color=yellow)](https://github.com/open-feature/spec/tree/v0.4.0)
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 This is the Java implementation of [OpenFeature](https://openfeature.dev), a vendor-agnostic abstraction library for evaluating feature flags.
 
 We support multiple data types for flags (numbers, strings, booleans, objects) as well as  hooks, which can alter the lifecycle of a flag evaluation.
