doc: remove errant blank line to appease doc-nits
doc: remove errant blank line to appease doc-nits

Fixes #16328

Reviewed-by: Kurt Roeckx <bb87b47479d83cec3c76132206933257ded727b2@roeckx.be>
(Merged from https://github.com/openssl/openssl/pull/16330)

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