sha/asm/sha1-586.pl: fix typo.
sha/asm/sha1-586.pl: fix typo.

The typo doesn't affect supported configuration, only unsupported masm.

Reviewed-by: Matt Caswell <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@openssl.org>

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl