konishi.ryusuke@lab.ntt.co.jp> 1268530190 +0900

nilfs2: fix function name typos in docbook comments

Fixes the following typos in docbook comments:

 nilfs_detroy_transaction_cache -> nilfs_destroy_transaction_cache
 nilfs_secgtor_start_timer -> nilfs_segctor_start_timer

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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