dhall-docs man pages on linux should be in share/man1/

[Profpatsch]

https://github.com/dhall-lang/dhall-haskell/pull/2111 added the docs manpage to the tarball, but

./share/man/dhall-docs.1

should be

./share/man/man1/dhall-docs.1

cc @Gabriel439

[Profpatsch]

Same for ./share/man/dhall.1

[sjakobi]

@Profpatsch Could you clarify which directory would be correct? In the issue title you mention share/man1/, but in the description you mention share/man/man1/.

Maybe simply open a PR if it's easy to fix.