What is the doc issue?

Describe the issue
In https://microsoft.github.io/autogen/stable/user-guide/agentchat-user-guide/graph-flow.html#advanced-example-conditional-loop-filtered-summary and https://microsoft.github.io/autogen/stable/user-guide/agentchat-user-guide/graph-flow.html#advanced-example-cycles-with-activation-group-examples

The two GraphFlow examples fail when run - due to missing termination condition, and ref to agent_e

What do you want to see in the doc?

The corrected code examples

Additional context

Error 1: ValueError: A termination condition is required for cyclic graphs without a maximum turn limit.
Error 2: RuntimeError: Speaker E not found in participant names.

Link to the doc page, if applicable

https://microsoft.github.io/autogen/stable/user-guide/agentchat-user-guide/graph-flow.html