More update on Settings help links

[DelazJ]

Hi Nyall,

• Instead of using the user visible section title that may change in the future (either in the GUI or because we use a different type of titling in the docs) I suggest we rely on the sections anchors that almost never change.
• While at it, instead of customizing links for only the tabs that do not belong to the Options ui file, I suggest we use direct links for the other tabs too. Not sure if the "if .. else if" style is the more appropriate.
• Last, I add a help link for the User profile tab also (but still remains the last screenshot at Tweaking user profile selector dialog and settings qgis/QGIS#53569 (comment))

[DelazJ]

@nyalldawson Just to get sure you noticed this one, for qgis#55291

[nyalldawson]

This looks better than my approach! 😁 Could you open this against the main repo and I'll approve?