euler user guide update

[emanuel-schmid]

Changes proposed in this PR:

• update the Euler user guide to the newest version (the only version that runs with current develop branch)

This PR fixes #

PR Author Checklist

• [x] Read the Contribution Guide
• [x] Correct target branch selected (if unsure, select develop)
• [x] Descriptive pull request title added
• [x] Source branch up-to-date with target branch
• [x] Documentation updated
• [ ] Tests updated
• [ ] Tests passing
• [ ] No new linter issues
• [ ] Changelog updated

PR Reviewer Checklist

• [ ] Read the Contribution Guide
• [ ] CLIMADA Reviewer Checklist passed
• [ ] Tests passing
• [ ] No new linter issues

[chahank]

Looks clear to me. @manniepmkam Did this solve your issues?

[manniepmkam]

Yes, it works fine for me now. And this version only works with the develop branch but not the main branch. Shall we also indicate that in the guide?

[chahank]

Thanks for the feedback. There is no need to add a message about the develop branch I think. This will be merged into the develop branch only, so I think it will be clear.

[emanuel-schmid]

Thanks for the review!