TextEditor - Nova contains several broken links to the disposable page. Search for [Disposable][disposable]. (It might be worth doing a global search for something like (\[.+\])\[(.+\)] and replace with $1($2), assuming the source is in markdown.)
Oh, one more thing, even though it doesn’t have to do with the documentation: in the panic.CSSValidator extension’s description the word validator is misspelled (valiator).