message: Link to the category slugs page from the docs instead
diff: @@ -124,7 +124,7 @@ readme = "..."
  keywords = ["...", "..."]
  # This is a list of up to five categories where this crate would fit.
  -# Categories are a fixed list available at crates.io/categories, and
  +# Categories are a fixed list available at crates.io/category_slugs, and
  # they must match exactly.
  categories = ["...", "..."]
  