doc: updates to clarify cloud shell usage, fixes #1581

[ghchinoy]

Description

Further updates to multimodal docs README to clarify Cloud Shell usage

• proper substitution within frontend/scripts.js (instead of index.html)
• entry of project ID in UX (not full model path)

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Fixes #1581 🦕

[code-review-assist]

Hi team,

I'm currently reviewing this pull request and will post my full review in a few minutes. In the meantime, here's a quick summary to help you and other reviewers get up to speed:

This pull request, authored by ghchinoy, updates the documentation to clarify Cloud Shell usage for the multimodal live API demo app. The goal is to make the setup instructions clearer and easier to follow. Specifically, the changes address:

• Improved Cloud Shell Instructions: The README has been updated to provide more precise instructions for using Cloud Shell, including:
  • Correctly referencing the location of the script.js file (now frontend/script.js).
  • Clarifying that only the Project ID is needed in the UI, not the full model path.
  • Updating line numbers in the instructions to reflect the changes in script.js.

The changes are limited to the README.md file within the websocket-demo-app directory. The updated instructions simplify the process of setting up the demo app in Cloud Shell by providing more accurate file paths and input requirements.

Here's a table summarizing the changes:

File	Change	Line Numbers (Approximate)
gemini/multimodal-live-api/websocket-demo-app/README.md	Updated Cloud Shell instructions; corrected file paths and input requirements.	129-142, 157-163

I've reviewed the code and the changes are well-documented and easy to understand. The updated instructions should significantly improve the user experience.

---

And now, a little haiku to lighten the mood:

Cloud Shell's clear path,
Docs now guide with gentle hand,
Code flows smoothly on.

Best,
Gemini

[code-review-assist]

This pull request clarifies the Cloud Shell usage instructions in the README, which is a valuable improvement for users trying to set up the demo app. The changes correctly identify the location of the PROXY_URL and PROJECT_ID variables and guide users to update them appropriately. The simplification of the model ID instruction is also helpful. Here are a few minor suggestions to further enhance the clarity and completeness of the documentation: