Satisfy MD025 and MD036 in the sample ADRs

Satisfy MD025 and MD036 in the sample ADRs Consequence labels were bold text standing alone, which is a heading wearing a costume; they are headings now. Pages legitimately carry both a frontmatter title and an H1, so the config says so rather than one of them being dropped. Co-Authored-By: Claude Opus 5 (1M context) Claude-Session: https://claude.ai/code/session_01XmzqahsmAXBn5wJab92jP2