docs: Update instrumentation-runtime-node README.md

[jeroenjanssen-cpp]

Which problem is this PR solving?

• instrumentation-runtime-node README.md has wrong links pointing to instrumenation-pg

Short description of the changes

• this corrects the links in the instrumentation-runtime-node README.md

[linux-foundation-easycla]

• ❌ - login: @jeroenjanssen-cpp / name: Jeroen Janssen . The commit (b74a525) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[maryliag]

Thank you for your contribution!

You need to sign the CLA, before we are able to merge this. Follow the steps from the comment above, and you will be able to get it signed. 😄

[jeroenjanssen-cpp]

Sorry, I didn't figure out up front how to CLA signing works from my company pov. (even though this is a small change)
so I am getting that sorted out

[maryliag]

Np, you can also sign as an individual, not as part of a company.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.75%. Comparing base (5eb61d8) to head (b74a525).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2534   +/-   ##
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  Coverage   90.75%   90.75%           
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  Files         169      169           
  Lines        8018     8018           
  Branches     1632     1632           
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  Hits         7277     7277           
  Misses        741      741