Merge pull request #416 from control-toolbox/ocots-patch-1

Update README.md

Author: ocots

README.md

@@ -12,7 +12,7 @@
 [doc-stable-img]: https://img.shields.io/badge/docs-stable-blue.svg
 [doc-stable-url]: https://control-toolbox.org/OptimalControl.jl/stable/
 
-[release-img]: https://juliahub.com/docs/General/OptimalControl/stable/version.svg
+[release-img]: https://img.shields.io/github/release/control-toolbox/OptimalControl.jl.svg
 [release-url]: https://github.com/control-toolbox/OptimalControl.jl/releases
 
 [pkg-eval-img]: https://juliahub.com/docs/General/OptimalControl/stable/pkgeval.svg