Fix changelog entry

Author: anakinj

CHANGELOG.md

@@ -9,7 +9,7 @@
 - Add support for x5t header parameter for X.509 certificate thumbprint verification [#669](https://github.com/jwt/ruby-jwt/pull/669) ([@hieuk09](https://github.com/hieuk09))
 - Raise an error if the ECDSA signing or verification key is not an instance of `OpenSSL::PKey::EC` [#688](https://github.com/jwt/ruby-jwt/pull/688) ([@anakinj](https://github.com/anakinj))
 - Allow `OpenSSL::PKey::EC::Point` to be used as the verification key in ECDSA [#689](https://github.com/jwt/ruby-jwt/pull/689) ([@anakinj](https://github.com/anakinj))
-- Require claims to have been verified before accessing the `JWT::EncodedToken#payload`
+- Require claims to have been verified before accessing the `JWT::EncodedToken#payload` [#690](https://github.com/jwt/ruby-jwt/pull/690) ([@anakinj](https://github.com/anakinj))
 - Your contribution here
 
 **Fixes and enhancements:**