[Issue 21086] New: Dead docs link

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21086

          Issue ID: 21086
           Summary: Dead docs link
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: major
          Priority: P1
         Component: dlang.org
          Assignee: nobody at puremagic.com
          Reporter: wyz23x2 at 163.com

https://dlang.org/phobos/core_thread_context.html dead link.

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