https://dlang.org/spec/traits.html defaults to master and does not have most recent stable version available for selection

[dlangBugzillaToGithub]

Nathan S. reported this on 2021-05-29T20:42:41Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=21987

Description

A user just posted asking why the `__traits(toType, "i")` example from the documentation isn't working on run.dlang.io. This confusion is caused by https://dlang.org/spec/traits.html defaulting to showing master rather than the most recent stable version. Worse though, the most recent stable version isn't even selectable on that page! If a user tries to select a documentation version other than master the most recent available is 2.081 which does not have documentation for traits such as `isZeroInit` and `isModule` that have been added since then.