fix linearRGB output, minor docs improvements

[drwpow]

Changes

• Docs cleanup
• Fixes .linearRGB and .linearRGBVal’s inconsistent output from the other colorspaces

Checklist

• [x] Changeset added (pnpm run changeset)
• [x] Clear description of changes in PR notes and changeset
• [x] I’ve added a test where I can

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🦋 Changeset detected

Latest commit: 50e16230ddac391f68971c9f07f0d5143be13441

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ------------------ | ----- | | better-color-tools | Patch |

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