Update demo

Demo/Particle System (Spread).prefab

@@ -240,8 +240,8 @@ ParticleSystem:
     startSize:
       serializedVersion: 2
       minMaxState: 3
-      scalar: 0.3
-      minScalar: 0.05
+      scalar: 0.5
+      minScalar: 0.2
       maxCurve:
         serializedVersion: 2
         m_Curve:
@@ -1098,8 +1098,8 @@ ParticleSystem:
         m_NumColorKeys: 2
         m_NumAlphaKeys: 2
   UVModule:
-    enabled: 1
-    mode: 0
+    enabled: 0
+    mode: 1
     frameOverTime:
       serializedVersion: 2
       minMaxState: 1
@@ -1216,7 +1216,7 @@ ParticleSystem:
     flipV: 0
     randomRow: 1
     sprites:
-    - sprite: {fileID: 0}
+    - sprite: {fileID: 21300000, guid: 925f66fdcc9764b579413b7408c718f2, type: 3}
   VelocityModule:
     enabled: 0
     x: