Added release note for fly workers age fix
concourse/concourse#4548
#### <sub><sup><a name="v510-note-git-resource-273" href="#v561-note-git-resource-273">:link:</a></sup></sub> fix
* @CliffHoogervorst fixed an [issue](https://github.com/concourse/git-resource/issues/275) in the [git resource](http://github.com/concourse/git-resource), where the version order was not correct when using [`paths`](https://github.com/concourse/git-resource#source-configuration) concourse/git-resource#273.
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+#### <sub><sup><a name="v510-note-4548" href="#v561-note-4548">:link:</a></sup></sub> fix
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+* @evanchaoli fixed an [issue](https://github.com/concourse/concourse/issues/4545), where [`fly workers`](https://concourse-ci.org/administration.html#fly-workers) would show the wrong age for a worker if that worker was under an hour old #4548.
