Fix links in readme #2970

Job	Run time
codecov (./packages/autogen-core)	1m 2s
codecov (./packages/autogen-magentic-one)	1m 52s
format	49s
lint	49s
codecov (./packages/autogen-ext)	2m 38s
codecov (./packages/autogen-agentchat)	1m 13s
pyright (./packages/autogen-core)	55s
mypy (./packages/autogen-core)	2m 21s
pyright (./packages/autogen-magentic-one)	1m 8s
test (./packages/autogen-core)	1m 6s
mypy (./packages/autogen-magentic-one)	1m 6s
test (./packages/autogen-magentic-one)	1m 32s
pyright (./packages/agbench)	52s
mypy (./packages/agbench)	56s
test (./packages/autogen-ext)	3m 5s
pyright (./packages/autogen-ext)	1m 1s
mypy (./packages/autogen-ext)	1m 47s
test (./packages/autogen-agentchat)	57s
pyright (./packages/autogen-agentchat)	1m 7s
mypy (./packages/autogen-agentchat)	1m 4s
check-proto-changes-python	1m 6s
docs (./packages/autogen-core)	1m 20s
docs-example-check (./packages/autogen-core)	2m 40s
markdown-code-lint	1m 46s
	34m 12s

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