Finish fixing types

server/remark-toc.ts

@@ -7,6 +7,7 @@ import { fromMarkdown } from "mdast-util-from-markdown";
 import type { Parent } from "unist";
 import type { VFile } from "vfile";
 import type { Content } from "mdast";
+import type { Transformer } from "unified";
 
 // relativePathToFile takes a filepath and returns a path we can use in links
 // to the file in a table of contents page. The link path is a relative path