docs(lanelet2_utils): fix invalid drawio link and update image

[soblin]

Description

fix the link to "Open" drawio

Related links

Parent Issue:

• Link

How was this PR tested?

Notes for reviewers

None.

Interface changes

None.

Effects on system behavior

None.

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.18%. Comparing base (4cb18f5) to head (8b9f9d4).
Report is 73 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #251       +/-   ##
===========================================
- Coverage   78.75%   43.18%   -35.58%     
===========================================
  Files          11       18        +7     
  Lines         193      528      +335     
  Branches       73      167       +94     
===========================================
+ Hits          152      228       +76     
- Misses         11      230      +219     
- Partials       30       70       +40     

Flag	Coverage Δ
differential	43.18% <ø> (?)
total	?

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