doc: better font stack for monospace in docs
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines
There appear to be rendering issues with inconsistent glyph width when using the Monaco font on non-macOS machines. This change updates the native CSS font stack to use the same font stack as Boostrap does, minus the Monaco font.