[Issue 13310] Old style multiple alias declaration not documented

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13310

--- Comment #2 from Kenji Hara <k.hara.pg at gmail.com> ---
It was introduced by the commit:

https://github.com/D-Programming-Language/d-programming-language.org/commit/75e0330885806320cffde70d85e19ab1a816ffc9

to fix issue 5841.

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