Fix PCM5102 pin configuration example in README.md

[Jeeere]

Add missing newline
Change SCL to SCK to match datasheet

[gemini-code-assist]

Summary of Changes

Hello @Jeeere, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on improving the accuracy and readability of the PCM5102 pin configuration example within the README.md file. The primary goal is to ensure that the documentation provides correct pin assignments, aligning with the component's datasheet, and presents this information in a well-formatted manner for clarity.

Highlights

• Documentation Correction: Corrected the PCM5102 pin configuration example in README.md by changing the pin name from 'SCL' to 'SCK' to accurately reflect the datasheet.
• Formatting Improvement: Added missing newlines within the PCM5102 pin configuration section in README.md to enhance readability and formatting.

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[gemini-code-assist]

Code Review

This pull request corrects a pin name for the PCM5102 from SCL to SCK and fixes markdown formatting for better rendering. The changes are accurate and improve the documentation. I've added one suggestion to correct another pin name to fully align with the datasheet.

[gemini-code-assist]

To better align with the PCM5102A datasheet, consider correcting the pin name from XMT to XSMT. The datasheet refers to this pin as XSMT (Soft Mute Control).

Suggested change

	XMT - 3.3V
	XSMT - 3.3V

[Jeeere]

I can change all pins to match the datasheet if that would be better.