[Contribution Request][promptflow-azure-ai-language] Update package documentation and example flows.

[murraysean]

Is your contribution request related to a problem? Please describe.
Azure AI Language has developed a promptflow custom tool package promptflow-azure-ai-language to expose Language capabilities to users. This contribution request updates the package's docs and examples per the contribution guidelines listed here.

Please see this older issue and PR for contribution level 1.

Detail the functionality and value.
Updated documentation and example flow use-cases for the promptflow-azure-ai-language package.

Additional context
See current PR here.

[brynn-code]

Hi @murraysean , we have both examples and docs added, please reach here:
Example: https://github.com/microsoft/promptflow/tree/main/examples/flows/integrations
Docs: https://microsoft.github.io/promptflow/integrations/tools/azure-ai-language-tool.html

[murraysean]

Hi @brynn-code, this is an update to the existing docs and examples. I have recently updated the PyPI package and want the docs/examples in the Promptflow repo to reflect the changes. So users can see the most up-to-date information.