fyi minor type in v28 release notes

[Mark Stumpf]

https://github.com/DataDog/datadog-lambda-extension/releases/tag/v28
Either
Adds inferred spans for SNS should be Adds inferred spans for S3
or the link to the PR from SNS is incorrectly pointing at s3 (which is also in the release notes for v29)

[Tian Chu]

@jcstorms1 can you help update the release notes?

[Jordan Storms]

Thanks for the heads up @mstumpfx. I've updated the v28 release with the correct PR for SNS.