Zig Standard library documentation in 0.12 language reference linking to master

[timsavage]

The link to the Zig Standard Library from the language reference is linking to master instead of 0.12

Is currently:

The <a href="https://ziglang.org/documentation/master/std/">Zig Standard Library</a> has its own documentation.>

Would expect

The <a href="https://ziglang.org/documentation/0.12.0/std/">Zig Standard Library</a> has its own documentation.

Link to location in the documentation source: https://github.com/ziglang/www.ziglang.org/blob/master/content/documentation/0.12.0/index.html#L784

[timsavage]

The behavior of linking to master appears to be consistent across all language reference versions.