Check REPLACE_ links and update complete documentation

[masc2023]

Links from Process_Description to SCORE or other repositories are not allowed.
Currently they are de-activated and marked with "REPLACE_".

Goal of this issue is too check document for these links and either to replace it or re-formulate the content.

[MaximilianSoerenPollak]

More places that score is mentioned:

https://eclipse-score.github.io/process_description/main/process_areas/implementation/implementation_getstrt.html#developer-experience

https://eclipse-score.github.io/process_description/main/process_areas/problem_resolution/guidance/problem_resolution_template.html#problem-report-template

[masc2023]

Closing it, as this task is now part of all EPICs for ML2