[Issue 18648] Document the type of std.stdio.stdin and friends

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18648

Seb <greensunny12 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |greensunny12 at gmail.com
           Hardware|x86_64                      |All
                 OS|Linux                       |All

--- Comment #1 from Seb <greensunny12 at gmail.com> ---
PR https://github.com/dlang/phobos/pull/6329

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