Update CameraPreview.md to remove duplicate =

[antmurph]

What changes to the docs does this PR provide?

One character change on CameraPreview.md to remove duplicate = on line 97

PR Checklist

Please check if your PR fulfills the following requirements:

• [ ✓] Correctly picked the right branch to base the change off (dev for new features, master for typos/improvements)
• [ ✓] For new pages, used the provided template
• [✓ ] For new features, added an entry in the Table of Contents
• [ ✓] Ran against a spell and grammar checker
• [ ✓] Contains NO breaking changes

[opbld32]

Docs Build status updates of commit a024ace:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
docs/controls/CameraPreview.md	:white_check_mark:Succeeded	View

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