Credit proofreaders

content/matrix-retention-policies.md

 
 Note that this isn't a technical documentation on how to use the feature, therefore I didn't specifically outlined the limitations, important bits of config, etc. related to this feature, but instead spread them through the post. If you just need to make it work and skim across its shortcomings then [the documentation](https://github.com/matrix-org/synapse/blob/develop/docs/message_retention_policies.md) is the right place to look.
 
-I sure had fun writing this post, it was nice revisiting one of my first big features in Synapse, and it motivated me to look with fresh new eyes into all of the implementation's details (and even find a few bugs), which was welcome 😀
+I sure had fun writing this post, it was nice revisiting one of my first big features in Synapse, and it motivated me to look with fresh new eyes into all of the implementation's details (and even find a few bugs), which was welcome 😀 Huge thanks to [Thibaut](https://github.com/CromFr), [Andrew](https://github.com/anoadragon453) and [Dan](https://github.com/callahad) for proofreading it!
 
 See you in the next post! 🙂