Move the main help page

It was on /help/en/index, now it is on both /help/en and /help

help/help.go

@@ -5,11 +5,14 @@ import (
 	"embed"
 )
 
-//go:embed en
+//go:embed en en.myco
 var fs embed.FS
 
 // Get determines what help text you need and returns it. The path is a substring from URL, it follows this form:
 //     <language>/<topic>
 func Get(path string) ([]byte, error) {
+	if path == "" {
+		return Get("en")
+	}
 	return fs.ReadFile(path + ".myco")
 }