chore: coc shield

README.md

@@ -19,6 +19,7 @@
     <a href="https://pkg.go.dev/github.com/ory/hydra"><img src="https://pkg.go.dev/badge/www.github.com/ory/hydra" alt="PkgGoDev"></a>
     <a href="https://bestpractices.coreinfrastructure.org/projects/364"><img src="https://bestpractices.coreinfrastructure.org/projects/364/badge" alt="CII Best Practices"></a>
     <a href="#backers" alt="sponsors on Open Collective"><img src="https://opencollective.com/ory/backers/badge.svg" /></a> <a href="#sponsors" alt="Sponsors on Open Collective"><img src="https://opencollective.com/ory/sponsors/badge.svg" /></a>
+    <a href="https://github.com/ory/hydra/blob/master/CODE_OF_CONDUCT.md" alt="Ory Code of Conduct"><img src="https://img.shields.io/badge/ory-code%20of%20conduct-green" /></a>
 </p>
 
 ORY Hydra is a hardened, **OpenID Certified OAuth 2.0 Server and OpenID Connect Provider** optimized for low-latency, high throughput,