docs: Added update to packages/ipfs-http-client/README.md for Issue #4072

[ShehanAT]

Description

This is a README.md update for the following file: js-ipfs/packages/ipfs-http-client/README.md.

It involved updating a line in the Example section, from this line:
const client = create('http://127.0.0.1:5002')
to this line:
const client = create({ url: "http://127.0.0.1:5002/api/v0" });

This change fixes #4072

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update

How Has This Been Tested?

No tests run as this PR is a simple documentation update.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

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