Update Google Analytics section of UG

[chalin]

• Closes Understanding config params: services.googleAnalytics.id vs. top-level googleAnalytics #921

Preview: https://deploy-preview-1098--docsydocs.netlify.app/docs/adding-content/feedback/#adding-analytics

[chalin]

@LisaFC @emckean @geriom - I suspect that the all-zeros ID is bogus, and that it was used only for the side-effect of having the feedback form appear on pages. So I'm removing this for now, and we can track progress via:

• Setup Google Analytics for User Guide and Example #1097
• User guide: reenable page Feedback #1099

[chalin]

Update: I moved the ID to earlier in the file. It can still be used while we wait for a "real" ID (#1097).

[chalin]

FYI, I posted this question: https://discourse.gohugo.io/t/config-is-services-googleanalytics-id-an-alias-for-googleanalytics/39469. If it turns out that they are (officially) aliases, I'll add a note to that effect to the GA section.

[chalin]

All: this is ready for review. I decided to simplify this change by referring the reader to the appropriate section of the Hugo docs. The page update includes a warning (about not setting both googleAnalytics and services.googleAnalytics.id), but eventually (once gohugoio/hugoDocs#1780 is addressed), we'll be able to remove the warning.

[geriom]

but eventually (once gohugoio/hugoDocs#1780 is addressed), we'll be able to remove the warning.

Should we open an issue to track this?

[chalin]

Should we open an issue to track this?

Done:

• User guide: drop/rework comment about GA params #1146

Given @geriom's approval, I'm going to merge.