docs(core): remove obsolete nx cloud default value from docs

[meeroslav]

Current Behavior

Expected Behavior

Related Issue(s)

Fixes #

[nx-cloud]

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✅ Successfully ran 5 targets

• nx affected --target=e2e --base=cc4e8c188591addb813bcc0cca5e55cd1ca8eb83 --head=69fae01b99203fa136e80e33f6b97e6eda18edce --exclude=e2e-storybook,e2e-react-native,e2e-detox --parallel=1
• nx affected --target=build --base=cc4e8c188591addb813bcc0cca5e55cd1ca8eb83 --head=69fae01b99203fa136e80e33f6b97e6eda18edce --parallel=3
• nx affected --target=test --base=cc4e8c188591addb813bcc0cca5e55cd1ca8eb83 --head=69fae01b99203fa136e80e33f6b97e6eda18edce --parallel=1
• nx affected --target=lint --base=cc4e8c188591addb813bcc0cca5e55cd1ca8eb83 --head=69fae01b99203fa136e80e33f6b97e6eda18edce --parallel=3
• nx build typedoc-theme

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[leosvelperez]

LGTM! 🎉

[github-actions]

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