Fix issue 420: clarify Facts vs Assertions

[gillenhaalb]

Addresses issue #420 with assistance from @cgranade's writing there

[acrolinxatmsft1]

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Article	Acrolinx score	Lowest category score	Spelling issues	Scorecard	Processed
articles/techniques/testing-and-debugging.md	80	56	1	link	✅

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[opbld30]

Docs Build status updates of commit 178a258:

✅ Validation status: passed

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[cgranade]

LGTM!

[acrolinxatmsft1]

Acrolinx Scorecards

A minimum Acrolinx score of 80 is required.

Click the scorecard links for each article to review the Acrolinx feedback on grammar, spelling, punctuation, writing style, and terminology.

Article	Acrolinx score	Lowest category score	Spelling issues	Scorecard	Processed
articles/techniques/testing-and-debugging.md	80	56	1	link	✅

More information about Acrolinx

• Install Acrolinx locally for VSCode
• False positives or issues
• Troubleshooting issues with Acrolinx

[acrolinxatmsft1]

Acrolinx Scorecards

A minimum Acrolinx score of 80 is required.

Click the scorecard links for each article to review the Acrolinx feedback on grammar, spelling, punctuation, writing style, and terminology.

Article	Acrolinx score	Lowest category score	Spelling issues	Scorecard	Processed
articles/techniques/testing-and-debugging.md	80	56	1	link	✅

More information about Acrolinx

• Install Acrolinx locally for VSCode
• False positives or issues
• Troubleshooting issues with Acrolinx

[opbld31]

Docs Build status updates of commit 8b0dced:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/techniques/testing-and-debugging.md	✅Succeeded	View (qsharp-preview)

For more details, please refer to the build report.

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[opbld30]

Docs Build status updates of commit 0ad0530:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/techniques/testing-and-debugging.md	✅Succeeded	View (qsharp-preview)

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.