doc/rgw - fix grammar in table in s3.rst

Put an "only" in the correct place. Also, this is a very small change
that will allow me to see if Jenkins is working (it probably isn't).

Signed-off-by: Zac Dover <zac.dover@proton.me>

doc/radosgw/s3.rst

@@ -42,7 +42,7 @@ The following table describes the support status for current Amazon S3 functiona
 +---------------------------------+-----------------+----------------------------------------+
 | **Bucket Lifecycle**            | Supported       |                                        |
 +---------------------------------+-----------------+----------------------------------------+
-| **Bucket Replication**          | Partial         | Only permitted across zones            |
+| **Bucket Replication**          | Partial         | Permitted only across zones            |
 +---------------------------------+-----------------+----------------------------------------+
 | **Policy (Buckets, Objects)**   | Supported       | ACLs & bucket policies are supported   |
 +---------------------------------+-----------------+----------------------------------------+