Fix typo

README.md

@@ -36,8 +36,16 @@ However, please do not donate unless you are in a stable financial situation.
 
 - [gravel's PGP root key](pgp/gravel.asc)
 
+Fingerprint: a4e8 f0c0 2b6f 5589 c0bb 95a0 118f df6c 43c6 9326
+
 - [gravel's PGP commit signing key](pgp/gravel-commits.asc) (Expires on 2024-04-26)
 
+Fingerprint: ce0c f8c2 79ff 86e3 6274 d4c2 c053 8f3c 906b 308f
+
+Note: *Codeberg will report that commits on my repositories were "Signed by untrusted user who does not match committer."*
+
+*This check is based on matching the commit e-mail address to addresses verified with the Codeberg account. However, my commit address corresponds to a temporary address used to register for an account at [Lokinet Gitea](https://lokilocker.com/). As such, I'm unable to verify it with Codeberg.org.*
+
 ### Usage
 
 ```sh