Use https instead of http

[komainu8]

Dear, developers.
I've fixed an issue #1459.

[komainu8]

@Philippus Thank you for your suggestion.
I've fixed it.

[exoego]

Could you apply same changes to _ja/index.md too?
That file is Japanese translation of index.md

[komainu8]

@exoego Yes. I applied the same change to the Japanese page too.

[exoego]

@komainu8 Thanks !!

[Philippus]

Your commit message uses version 2.1.3, this should be 2.13. You may want to change it to have a nicer history.

[komainu8]

@Philippus Thank you for your comment.
I've fixed my commit message(version 2.1.3 -> version 2.13).

[exoego]

It seems that there is only one 404 in https://ci.scala-lang.org/scala/docs.scala-lang/374/3

• ./_site/ja/overviews/parallel-collections/ctries.html

• External link https://lampwww.epfl.ch/~prokopec/ctries-snapshot.pdf failed: 404 No error

[komainu8]

@exoego Thank you for your comment.
I found also the other same broken links. So, I've also fixed them.

[komainu8]

I've finished modifying http to https(except not exist https site) in all document.

[SethTisue]

this is much more broad than just fixing #1459; it changes all links, instead of only links within scala-lang.org

that makes me a bit nervous. should I be nervous? if the link-checker likes it, then maybe it's okay...?

[komainu8]

Ah...I see.
You're right. This PR is broad.
I reduce modify.

[SethTisue]

I reduce modify.

well, maybe it's fine as-is, actually.

any other maintainers in this repo have an opinion?

[SethTisue]

thank you @komainu8 !!