fix(api): move captcha handler in front of registration handler

Examples in documentation has captcha after APi handler however that does not seem to work, so it is moved in front here.

register.go

@@ -19,7 +19,7 @@ type registration struct {
 
 // Waitlist registration route
 func routeRegister(app *fiber.App, p string, db *leveldb.DB, count *atomic.Uint64, captcha fiber.Handler) {
-	app.Post(p, rateLimiter(), func(c fiber.Ctx) error {
+	app.Post(p, rateLimiter(), captcha, func(c fiber.Ctx) error {
 		t := time.Now().UTC()
 		req := new(registration)
 
@@ -68,5 +68,5 @@ func routeRegister(app *fiber.App, p string, db *leveldb.DB, count *atomic.Uint6
 		log.Printf("registered email %q", req.Email)
 		count.Add(1)
 		return c.JSON(newMessage(true, "Email registered successfully"))
-	}, captcha)
+	})
 }