fix edit on github button

[ArnoStrouwen]

https://docs.sciml.ai/RuntimeGeneratedFunctions/stable/

[ArnoStrouwen]

Could also be fixed by adding https://github.com/SciML/MuladdMacro.jl/blob/master/docs/src/index.md but then it will have the badges in the docs.

[codecov[bot]]

Codecov Report

Merging #47 (f0ca656) into master (bdca841) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #47   +/-   ##
=======================================
  Coverage   95.91%   95.91%           
=======================================
  Files           1        1           
  Lines          98       98           
=======================================
  Hits           94       94           
  Misses          4        4           

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