feat(docs): regenerate CHAMPIONS.md from champions.json in scraper

- Add saveMarkdown in markdown.go rendering the Loldle classic-mode column
  table (Champion | Gender | Genre | Range | Resource | Region | Lane | Year).
- main.go writes CHAMPIONS.md after champions.json on every scrape.
- update-champions.yml stages CHAMPIONS.md alongside champions.json so CI
  commits both in lockstep.
- alt text on tile images now uses champion display name (e.g. Bel'Veth)
  instead of the ID slug.

data/main.go

@@ -45,8 +45,13 @@ func main() {
 	if err := saveJSON(outputPath, champions); err != nil {
 		log.Fatalf("Failed to save JSON: %v", err)
 	}
-
 	fmt.Printf("Champion data has been saved to %s\n", outputPath)
+
+	markdownPath := "CHAMPIONS.md"
+	if err := saveMarkdown(markdownPath, champions); err != nil {
+		log.Fatalf("Failed to save Markdown: %v", err)
+	}
+	fmt.Printf("Champion table has been saved to %s\n", markdownPath)
 }
 
 func saveJSON(path string, data []parser.ChampionResult) error {