Remove some duplicate words from the documentation

Fixup INSTALL and a couple man pages to get rid of "the the" and "in the
in the".

CLA: trivial

Reviewed-by: Paul Yang <kaishen.yy@antfin.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9563)

(cherry picked from commit 3c74e77bd89e3d5400ab4d640149e27863756579)