chore(docs): update redisio instrumentation docs link

[emilsivervik]

Which problem is this PR solving?

• The link is broken for viewing the documentation of the @opentelemetry/instrumentation-ioredis options.

Short description of the changes

• Add a new link to what I think the old one was pointing towards, please correct me if I'm wrong here.

[linux-foundation-easycla]

• ✅login: emilsivervik / (f05a85b)

The committers listed above are authorized under a signed CLA.

[blumamir]

Thanks!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.37%. Comparing base (dfb2dff) to head (f05a85b).
Report is 132 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2227      +/-   ##
==========================================
- Coverage   90.97%   90.37%   -0.61%     
==========================================
  Files         146      147       +1     
  Lines        7492     7502      +10     
  Branches     1502     1571      +69     
==========================================
- Hits         6816     6780      -36     
- Misses        676      722      +46     

see 43 files with indirect coverage changes