feat: adds title and description to flowchart

[lindseywild]

📑 Summary

• Adds a title and accDescription to flow charts to improve accessibility.
• Minor typos and grammar updates

Resolves part of #2732

📋 Tasks

Make sure you

• 📖 have read the contribution guidelines
• 💻 have added unit/e2e tests (if appropriate)
• 🔖 targeted develop branch

[ashishjain0512]

Hey

Thank you for your contribution. This we think will be quite a helpful for flowchart users. Good Job.

However, keeping the security risk in mind, we would suggest adding sanitization to user input. See the link for your reference:

Once this is done, we will be happy to merge it.

[lindseywild]

@ashishjain0512 Great callout, thank you! I added the sanitization to the title and description, also cleaned up the function a bit.

[knsv]

Super! Thanks for the update!