speedXZ -> speed (#1186)

* speedXZ to speed

* brackets

docs/tutorial/advanced_control_flow.md

@@ -67,7 +67,7 @@ void EnMs_Init(Actor* thisx, PlayState* play) {
     Actor_SetScale(&this->actor, 0.015f);
     this->actor.colChkInfo.mass = 0xFF;
     this->actionFunc = func_80952734;
-    this->actor.speedXZ = 0.0f;
+    this->actor.speed = 0.0f;
     this->actor.velocity.y = 0.0f;
     this->actor.gravity = -1.0f;
 }