update KEYS requires PMC

Author: kevinjqliu

mkdocs/docs/how-to-release.md

@@ -29,7 +29,9 @@ This guide outlines the process for releasing PyIceberg in accordance with the [
 
 ## Requirements
 
-* A GPG key must be registered and published in the [Apache Iceberg KEYS file](https://downloads.apache.org/iceberg/KEYS). Follow [the instructions for setting up a GPG key and uploading it to the KEYS file](#set-up-gpg-key-and-upload-to-apache-iceberg-keys-file).
+* A GPG key must be registered and published in the [Apache Iceberg KEYS file](https://downloads.apache.org/iceberg/KEYS). Follow [the instructions for setting up a GPG key and uploading it to the KEYS file]
+(#set-up-gpg-key-and-upload-to-apache-iceberg-keys-file).
+    * Permission to update the `KEYS` artifact in the [Apache release distribution](https://dist.apache.org/repos/dist/release/iceberg/) (requires Apache PMC access).
 * SVN Access
     * Permission to upload artifacts to the [Apache development distribution](https://dist.apache.org/repos/dist/dev/iceberg/) (requires Apache Committer access).
     * Permission to upload artifacts to the [Apache release distribution](https://dist.apache.org/repos/dist/release/iceberg/) (requires Apache PMC access).
@@ -407,5 +409,12 @@ cd icebergsvn
 echo "" >> KEYS # append a newline
 gpg --list-sigs <YOUR KEY ID HERE> >> KEYS # append signatures
 gpg --armor --export <YOUR KEY ID HERE> >> KEYS # append public key block
-svn commit -m "add key for <YOUR NAME HERE>"
+svn commit -m "add key for <YOUR NAME HERE>" # this requires Apache PMC access
 ```
+
+<!-- prettier-ignore-start -->
+
+!!! note
+    Updating the `KEYS` artifact in the `release/` distribution requires Apache PMC access. Please work with a PMC member to update the file.
+
+<!-- prettier-ignore-end -->