Fabric Website: Add section under "Developer resources" with link to versioned release notes and demos

[KevinTCoughlin]

Pull request checklist

• Include a change request file using $ npm run change

Description of changes

Adds section under "Developer resources" which links to https://aka.ms/FabricDemo. We want to use this section to educate third-party developers, specifically SharePoint developers about:

1. Versioned release notes
2. Versioned component demos
3. Versioned TypeScript compatibility (Coming soon to https://aka.ms/FabricDemo)

I defer to area owners re: page structure and language. I can clump under a different section if deemed appropriate.

Also whether or not we use aka.ms link vs absolute. The current aka.ms vanity URL is a bit confusing so I can see us preferring absolute URL if we bless this.

Focus areas to test

Microsoft Reviewers: Open in CodeFlow

[aditima]

Love this, @KevinTCoughlin. It would be very helpful to surface this link for SP dev partners.

[ecraig12345]

Not sure quite what you mean about the current aka.ms URL being confusing?

[KevinTCoughlin]

Not sure quite what you mean about the current aka.ms URL being confusing?

In case anyone minds that the vanity url is "FabricDemo" and this PR states the link points to "Release notes and demos". Doubt many would see or care tho, I don't mind.

Overloaded was probably the term I was looking for.

[msft-github-bot]

Component perf results:

Scenario	Target branch avg total (ms)	PR avg total (ms)	Target branch avg per item (ms)	PR avg per item (ms)	Is significant change	Is regression
PrimaryButton	84.128	85.171	0.841	0.852	false	false
BaseButton	33.565	34.759	0.336	0.348	false	false
NewButton	121.263	123.230	1.213	1.232	false	false
button	5.267	5.854	0.053	0.058	true	true
DetailsRows without styles	194.662	195.439	1.947	1.954	false	false
DetailsRows	218.902	228.659	2.189	2.287	true	true
Toggles	53.254	54.938	0.532	0.549	false	false
NewToggle	73.412	74.723	0.734	0.747	false	false
DocumentCardTitle with truncation	27.576	28.994	0.276	0.290	false	false

[size-auditor]

Size Auditor did not detect a change in bundle size for any component!

[ecraig12345]

In case anyone minds that the vanity url is "FabricDemo" and this PR states the link points to "Release notes and demos". Doubt many would see or care tho, I don't mind.

Overloaded was probably the term I was looking for.

I think the link is fine as-is, especially since the URL isn't displayed on the page and it will redirect as soon as the users click it. It's also nice in case we ever want to move the demo site to a different location (then we'd only have to update the aka link).

[ecraig12345]

Looks good, just one minor suggestion

[Jahnp]

Agreed, looks great to me. Good improvement @KevinTCoughlin !

[msft-github-bot]

Hello @KevinTCoughlin!

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[msft-github-bot]

🎉@uifabric/fabric-website@v6.18.4 has been released which incorporates this pull request.:tada:

Handy links:

• Release Notes
• Official NPM Release