Keep link reference definitions verbatim during wrap (#292)

CHANGELOG.md

@@ -14,6 +14,10 @@
   [#293](https://github.com/leynos/mdtablefix/issues/293))
 - Preserve inline GFM footnote references as unbreakable tokens when wrapping
   Markdown paragraphs. ([#277](https://github.com/leynos/mdtablefix/issues/277))
+- Preserve link reference definitions verbatim when `--wrap` is used, so
+  labels, URLs, and optional titles are never collapsed into prose or split
+  across lines.
+  ([`#292`](https://github.com/leynos/mdtablefix/issues/292))
 - Preserve trailing spaces on the final line when wrapping Markdown, retaining
   hard break semantics. See [trailing spaces](docs/trailing-spaces.md) for
   details. ([#65](https://github.com/leynos/mdtablefix/issues/65))