[🐞 Bug]: Fix docstrings NEN-EN1993-1-1 c2 a1 2006 formula 6.2 LaTeX render

[rickdegoeij]

Checks

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Issue description

In the docstring LaTeX is used:
n_ed : kN
[:math:N_{Ed}] Contains the design axial force [:math:kN].
n_rd : kN
[:math=N_{Rd}] Contains the design axial resistance [:math=kN].

n_ed renders fine, but where "math=" it doesn't render the LaTeX.

Changing "=" to ":" should fix

Reproducible example

Expected behavior

Expect correct rendering of LaTeX syntax in documentation

Installed versions