db: Match comment case to function name
`validateBlockSequence` is not exported, make the letter case in the comment match the function name.
@@ -556,7 +556,7 @@ func (db *DB) reload(deleteable ...string) (err error) {
return errors.Wrap(db.head.Truncate(maxt), "head truncate failed")
}
-// ValidateBlockSequence returns error if given block meta files indicate that some blocks overlaps within sequence.
+// validateBlockSequence returns error if given block meta files indicate that some blocks overlaps within sequence.
func validateBlockSequence(bs []*Block) error {
if len(bs) <= 1 {
return nil
