Missing redirects for the move from /performance/ to /tracing/

[mjq]

URL

All pages under /platforms/{platform}/performance/ and /platforms/{platform}/guides/{guide}/performance/,
e.g.
https://docs.sentry.io/platforms/javascript/performance/
https://docs.sentry.io/platforms/javascript/performance/instrumentation/
https://docs.sentry.io/platforms/javascript/guides/react/performance/
https://docs.sentry.io/platforms/javascript/guides/react/performance/instrumentation/

One other move we might want to capture is

https://docs.sentry.io/platforms/${docPlatform}/performance/connect-services
to
https://docs.sentry.io/platforms/${docPlatform}/tracing/trace-propagation, e.g.

https://docs.sentry.io/platforms/javascript/performance/connect-services/
to
https://docs.sentry.io/platforms/javascript/tracing/trace-propagation/

One other one found in the same PR was

https://docs.sentry.io/product/sentry-basics/tracing/trace-view/
to
https://docs.sentry.io/concepts/key-terms/tracing/trace-view/

Additional Info

It looks like we don't have general redirects for the move from /performance/ to /tracing/ inside platforms/guides, leading to broken links in docs and Sentry itself. I tried to fix all the broken links in Sentry but that won't help e.g. self-hosted users, so we should add redirects.

[stephanie-anderson]

Thanks for reporting, @mjq! It seems the redirects in vercel.conf haven't been working since we prepared something for develop docs - everything should be fixed now