[Issue 19733] New: expi documentation links broken

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19733

          Issue ID: 19733
           Summary: expi documentation links broken
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: trivial
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: Bastiaan at Veelo.net

https://dlang.org/phobos/std_complex.html#.expi links to std.math.expi, which
is not documented (the function is deprecated) so the link is malfunctioning.

In the overview on https://dlang.org/phobos/std_math.html, trigonometric
functions, expi is still listed, and thus equally malfunctioning.

Related: https://issues.dlang.org/show_bug.cgi?id=19732

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