[Bug]: Building locally section of Readme has outdated Infura References

### Describe the bug

In the "Building Locally" section of the Readme, it is written:
"Replace the INFURA_PROJECT_ID value with your own personal [Infura Project ID](https://infura.io/docs)."

The problem is that Infura has started calling it's Project IDs it's API keys instead as shown in their [site](https://docs.infura.io/infura/networks/ethereum/how-to/secure-a-project/project-id)

It would be great if the Readme could reflect the changes made by Infura so as to avoid any confusions.

### Steps to reproduce

1. Go to Readme.md file
2. Scroll down to Building Locally
3. View the 1st sub-point of the third point.

### Error messages or log output

_No response_

### Version

10.29.0

### Build type

None

### Browser

Brave

### Operating system

MacOS

### Hardware wallet

_No response_

### Additional context

_No response_

Open Readme.md and locate the “Building Locally” section, specifically the first sub-point of its third step. Compare the Infura terminology there with the linked Infura documentation, update the outdated wording, and verify that the setup instruction remains clear and accurate.

Written by the indexing model from the issue text.