Update README.md

[Taechai]

What does this PR do?

This PR updates the DreamBooth example installation instructions to specify the full path to the examples/dreambooth directory.

Motivation

Previously, the documentation said:

Then cd in the example folder and run
pip install -r requirements.txt

This was unclear because users might not know which example folder to cd into.

Now, the instructions are updated to explicitly show:

cd examples/dreambooth
pip install -r requirements.txt

This makes the installation process clearer and reduces confusion.

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Before submitting

• This PR fixes a typo or improves the docs (dismiss the other checks if not applicable).

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Who can review?

@stevhliu @sayakpaul

[stevhliu]

Thanks for making it clearer!

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.