Add canonical links to the documentation pages

[MrPowers]

Expected behavior

For all the versioned documentation pages to have canonical links to the latest documentation pages.

Actual behavior

Canonical links are missing, which causes SEO issues.

Example of problem

When I do a google search like "sedona ST_DistanceSphere", the 1.4.1 docs are the first result: https://sedona.apache.org/1.4.1/api/sql/Function/

We can fix this by adding canonical links to the pages.

We can just add this to the page:

<link rel="canonical" href="https://sedona.apache.org/latest/api/sql/Function/" />