docs: fix experimental example links

[legendecas]

Which problem is this PR solving?

Fixes #3006

Type of change

• This change requires a documentation update

Checklist:

• Followed the style guidelines of this project
• Documentation has been updated

[codecov]

Codecov Report

Merging #3007 (1f1bf09) into main (d10b254) will decrease coverage by 1.02%.
The diff coverage is n/a.

❗ Current head 1f1bf09 differs from pull request most recent head 13ce412. Consider uploading reports for the commit 13ce412 to get more accurate results

@@            Coverage Diff             @@
##             main    #3007      +/-   ##
==========================================
- Coverage   92.78%   91.76%   -1.03%     
==========================================
  Files         185      178       -7     
  Lines        6144     5671     -473     
  Branches     1300     1212      -88     
==========================================
- Hits         5701     5204     -497     
- Misses        443      467      +24     

Impacted Files	Coverage Δ
packages/opentelemetry-sdk-trace-web/src/utils.ts	65.62% <0.00%> (-29.38%)	⬇️
...ation-xml-http-request/src/enums/AttributeNames.ts
...mentation-xml-http-request/src/enums/EventNames.ts
...s/opentelemetry-instrumentation-fetch/src/fetch.ts
...-instrumentation-fetch/src/enums/AttributeNames.ts
...ry-context-zone-peer-dep/src/ZoneContextManager.ts
...es/opentelemetry-context-zone-peer-dep/src/util.ts
...emetry-instrumentation-xml-http-request/src/xhr.ts