Your ROOT_URL in app.ini is https://git.cloudchain.link/ but you are visiting https://dash.bss.nz/open-source-guides/TRaSH-Guides/src/commit/0d6e54c9c2bbf861aab3dc134d2c7d3b020f7b05/includes/cf-descriptions/hdr.md You should set ROOT_URL correctly, otherwise the web may not work correctly.

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This Custom Format will only match on HDR NOT on HDR10, HDR10+ etc

This Custom Format is a sort of "catch-all" for the HDR scene naming scheme where we don't know, based on name alone, which HDR formats are included - it could be HDR10, HDR10+ or even PQ.