Fix/readme image link

[t2kgrosse-boelting]

Change link for support image to t2k docTr article for now

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.55%. Comparing base (a8694b8) to head (c5b6fc2).
⚠️ Report is 23 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2088      +/-   ##
==========================================
+ Coverage   96.46%   96.55%   +0.08%     
==========================================
  Files         141      159      +18     
  Lines        6060     7753    +1693     
==========================================
+ Hits         5846     7486    +1640     
- Misses        214      267      +53     

Flag	Coverage Δ
unittests	96.55% <ø> (+0.08%)	⬆️

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[felixdittrich92]

@t2kgrosse-boelting Please rebase your branch and keep only the last commit 👍