completes the table on the readme with the .NET links to docs and packages.

[rysweet]

Why are these changes needed?

completes the table on the readme with the .NET links to docs and packages.

Related issue number

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://github.com/microsoft/autogen/blob/main/CONTRIBUTING.md to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

Copilot reviewed 1 out of 1 changed files in this pull request and generated no comments.

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README.md:130

• The cell text 'RuntimeGateway.Gpc' appears to contain a typo; it likely should be 'RuntimeGateway.Grpc' to match the package name in the URL.

[RuntimeGateway.Gpc](https://www.nuget.org/packages/Microsoft.AutoGen.RuntimeGateway.Grpc)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.63%. Comparing base (2570cc9) to head (0218622).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5673   +/-   ##
=======================================
  Coverage   75.63%   75.63%           
=======================================
  Files         171      171           
  Lines       10548    10548           
=======================================
  Hits         7978     7978           
  Misses       2570     2570           

Flag	Coverage Δ
unittests	75.63% <ø> (ø)

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