Update configuration.md

Author: rtyley

docs/configuration.md

@@ -40,7 +40,7 @@ don't copy-and-paste that big file, instead just make a small `release.yml` work
 it (as in the example file above).
 
 Your repo will require access to [release credentials](credentials/supplying-credentials.md) to
-[pass on those secrets](https://github.com/guardian/etag-caching/blob/9935da29e76b8b89759bcfe967cc7c1c02aa1814/.github/workflows/release.yml#L11-L13)
+[pass on those secrets](https://github.com/guardian/etag-caching/blob/main/.github/workflows/release.yml#L10-L13)
 to the workflow.
 
 ## Java version