add type annotations

html.nu

@@ -170,7 +170,7 @@ export def generate-index [figures: table, --reset-index] {
     ] | each { $"            ($in)" } | str join "\n") | save --force index.html
 }
 
-export def update-pages [--reset-index] {
+export def update-pages [--reset-index]: [ record<cpu: string, figures: table> -> nothing ] {
     let cpu = $in.cpu
     let figures = $in.figures | flatten figures | update out { path parse | get stem } | rename --column { out: hash }