tiny fix for an import warning

[VatsalSy]

1. Deprecation Warning: Sass @import rules are deprecated and will be removed in Dart Sass 3.0.0.

More info and automated migrator: https://sass-lang.com/d/import

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4 │ @import "minima";
│ ^^^^^^^^
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2. Given that there are several markdown related documentation. Perhaps, it is a good idea to add that statistics in the github repository (?)