Fix technical details in doc

[blegat]

Not so familiar with the qmd format so I just followed https://github.com/JuliaManifolds/Manopt.jl/blob/a9b0f2c2f8f119df292c2d110bfc332ed4a24498/tutorials/ImplementASolver.qmd#L16-L19

[codecov[bot]]

Codecov Report

Merging #260 (fe2216d) into master (a9b0f2c) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #260   +/-   ##
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  Coverage   99.70%   99.70%           
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  Files          73       73           
  Lines        6452     6452           
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  Hits         6433     6433           
  Misses         19       19           

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[kellertuer]

Wow, nice! Yes I was struggling with the admonitions from Documenter (and how to write them in .qmd for a while and the one you noticed is just a few days old. I did not yet have the time to check old admonitions – so great that you directly have a PR to fix them 👍