Find better formatting for HTML tables that are currently converted to markdown tables

Example of how a table currently renders in Google chat message:
```
| Bug ID | Description |
| --- | --- |
| 410670597 | Fixed the proxy response count metric (proxy/response_count) for EventFlow-enabled streaming proxies. |
| 375360455 | Resolved issues with connection termination when using HTTP streaming Added automatic retries for connection reset due to upstream services. |
| N/A | Updates to security infrastructure and libraries. |
```
[Release note link that shows table above](https://cloud.google.com/apigee/docs/release/release-notes#June_02_2025)