fix(website): Update expected messages (#1942)

## Which issue does this PR close?

- A minor doc fix

## What changes are included in this PR?
- Corrected the expected messages on the instructions to verify a
release


## Are these changes tested?
not needed

Author: CTTY

website/src/release.md

@@ -325,13 +325,13 @@ After downloading them, here are the instructions on how to verify them.
   ```bash
   gpg --verify apache-iceberg-rust-*.tar.gz.asc
   ```
-  Expects: `"apache-iceberg-rust-0.7.0.tar.gz: OK"`
+  Expects: `gpg: Good signature from ...`
 * Verify the checksums: 
 
   ```bash
   shasum -a 512 -c apache-iceberg-rust-*.tar.gz.sha512
   ```
-  Expects: `gpg: Good signature from ...`
+  Expects: `"apache-iceberg-rust-...tar.gz: OK"`
 * Verify build and test:
 
   ```bash