chore(macros/GamesSidebar): update WebVR -> WebXR link

[zfox23]

Summary

The associated Content PR updates some documentation to refer to WebXR rather than WebVR. This updates a sidebar link to match the new URL.

Motivation

• Updates a sidebar link.

Additional details

This work came out of a comment on @bsmth's mdn/content#30696.

Related issues and pull requests

Must be merged after mdn/content#30721

[caugner]

The newly referenced page does not seem to exist: https://developer.mozilla.org/en-US/docs/Games/Techniques/3D_on_the_web/WebXR

(Also note that WebVR_guide is a key of the localStringMap, and WebXR_guide isn't.)

[zfox23]

Right! I mentioned in the description that this PR must be merged after this content PR:
mdn/content#30721

I'll un-draft this after that's merged.

[bsmth]

Leaving a +1 as the downstream is approved, thank you! 👍🏻

[caugner]

@zfox23 Unfortunately, the menu item no longer shows up:

Note that you reference the WebXR_guide key, which doesn't exist in that text map.

(Also note that WebVR_guide is a key of the localStringMap, and WebXR_guide isn't.)

[zfox23]

@zfox23 Unfortunately, the menu item no longer shows up:

Note that you reference the WebXR_guide key, which doesn't exist in that text map.

(Also note that WebVR_guide is a key of the localStringMap, and WebXR_guide isn't.)

My apologies; I didn't understand your earlier comment but now I do. Will fix.