jbd2: correct stale function name in comment

jbd2: correct stale function name in comment

Rename stale journal_clear_revoked_flag to jbd2_clear_buffer_revoked_flags.
Rename stale journal_switch_revoke to jbd2_journal_switch_revoke_table.
Rename stale __journal_file_buffer to __jbd2_journal_file_buffer.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20250123155014.2097920-6-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>