[MINOR][BUILD] Fix script name in release-tag.sh usage message

## What changes were proposed in this pull request?

This PR fixes the old script name in `release-tag.sh`.

    $ ./release-tag.sh --help | head -n1
    usage: tag-release.sh

## How was this patch tested?

Manual.

    $ ./release-tag.sh --help | head -n1
    usage: release-tag.sh

Closes apache#23477 from dongjoon-hyun/SPARK-RELEASE-TAG.

Authored-by: Dongjoon Hyun <dongjoon@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

Author: dongjoon-hyun

dev/create-release/release-tag.sh

@@ -21,8 +21,9 @@ SELF=$(cd $(dirname $0) && pwd)
 . "$SELF/release-util.sh"
 
 function exit_with_usage {
+  local NAME=$(basename $0)
   cat << EOF
-usage: tag-release.sh
+usage: $NAME
 Tags a Spark release on a particular branch.
 
 Inputs are specified with the following environment variables: