Docs: Analytics

[machikoyasuda]

closes #953

What this PR does

• adds an Analytics page on the docs, under the Product & design category
• Analytics docs covers all the criteria in Add page/section describing Analytics #953 and links to Amplitude Benefits events docs https://data.amplitude.com/public-doc/hdhfmlby2e
• Analytics docs DOES NOT link to Metabase or show any charts

[github-actions]

Coverage report

The coverage rate went from 90.87% to 90.87% ➡️
The branch rate is 85%.

None of the new lines are part of the tested code. Therefore, there is no coverage data about them.

[machikoyasuda]

Ready for review @indexing @angela-tran

[indexing]

@machikoyasuda Everywhere we mention the "Cal-ITP Benefits application" in the Analytics doc, I proposed we make the text link to https://benefits.calitp.org so readers can easily correlate the documentation to the product.

[angela-tran]

This looks good to me @machikoyasuda !

[thekaveman]

@machikoyasuda Everywhere we mention the "Cal-ITP Benefits application" in the Analytics doc, I proposed we make the text link to https://benefits.calitp.org so readers can easily correlate the documentation to the product.

@indexing @machikoyasuda Let's have another think about this, I disagree that we need to link to the app all over our docs pages. By and large we don't expect the audience of the docs to overlap much with the real audience of the app, and we don't need/want to inflate any analytics with drive-bys.

We certainly want to link to the app from e.g. the docs homepage. I just don't think we need to make every instance of the phrase link to it.