Fix links in readme (#4881) #2971

Job	Run time
mypy (./packages/autogen-core)	2m 11s
mypy (./packages/autogen-magentic-one)	1m 26s
mypy (./packages/agbench)	1m 3s
mypy (./packages/autogen-ext)	2m 1s
codecov (./packages/autogen-core)	1m 4s
check-proto-changes-python	1m 21s
mypy (./packages/autogen-agentchat)	1m 13s
codecov (./packages/autogen-magentic-one)	1m 47s
codecov (./packages/autogen-ext)	2m 52s
docs (./packages/autogen-core)	1m 25s
docs-example-check (./packages/autogen-core)	2m 37s
codecov (./packages/autogen-agentchat)	1m 8s
format	49s
lint	51s
markdown-code-lint	1m 48s
pyright (./packages/autogen-core)	56s
pyright (./packages/autogen-magentic-one)	58s
test (./packages/autogen-core)	58s
pyright (./packages/agbench)	52s
test (./packages/autogen-magentic-one)	1m 19s
pyright (./packages/autogen-ext)	57s
test (./packages/autogen-ext)	2m 52s
pyright (./packages/autogen-agentchat)	1m 2s
test (./packages/autogen-agentchat)	1m 0s
	34m 30s

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