generate/generate: Fix "specifed" -> "specified" typo
generate/generate: Fix "specifed" -> "specified" typo

And a "priviledge" -> "privilege" typo.  Both turned up by Misspell
[1] and reported by Go Report Card [2].

[1]: https://github.com/client9/misspell
[2]: https://goreportcard.com/report/github.com/opencontainers/runtime-tools

Backported to master from #251

Signed-off-by: W. Trevor King <f75897670c17327c42ab201733fb8a81ff9f4c34@tremily.us>
Signed-off-by: Ma Shimiao <4511f16e942ad3568742865d09c9060c1d8bebb9@cn.fujitsu.com>

liangchenye/ocitools,opencontainers/runtime-tools,wking/ocitools-v2,opencontainers/ocitools,wking/ocitools-v2,opencontainers/runtime-tools,opencontainers/ocitools,liangchenye/ocitools