Monorepo for Tangled

appview/markup: restrict README candidate matching master

Restricts README detection to `README` or `README.<single_extension>` filenames only, preventing files like `README.Music.md` being selected to be rendered over `README.md` Fixes [#604](https://tangled.org/tangled.org/core/issues/604) Signed-off-by: Smit Patil <smit@smit.codes>


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2 changed files