Use latest jaeger documentation version

[albertteoh]

This will result in a redirect to the latest tagged documentation for Jaeger.

Description

The link to the SPM documentation is currently outdated. This change ensures the latest tagged version of Jaeger's documentation is pointed to, removing anymore need to maintain this link.

Merge requirements

Please take into account the following non-code changes that you may need to make with your PR:

• [ ] CHANGELOG entry for user-facing changes
• [x] Updated the relevant documentation

[CLAassistant]

All committers have signed the CLA.