Anchor GridWorld UI to top-left (#3706)

Author: awjuliani

Project/Assets/ML-Agents/Examples/GridWorld/Scenes/GridWorld.unity

@@ -38,7 +38,7 @@ RenderSettings:
   m_ReflectionIntensity: 1
   m_CustomReflection: {fileID: 0}
   m_Sun: {fileID: 0}
-  m_IndirectSpecularColor: {r: 0.44971162, g: 0.49977726, b: 0.5756362, a: 1}
+  m_IndirectSpecularColor: {r: 0.44971168, g: 0.4997775, b: 0.57563686, a: 1}
   m_UseRadianceAmbientProbe: 0
 --- !u!157 &3
 LightmapSettings:
@@ -1115,10 +1115,10 @@ RectTransform:
   m_Father: {fileID: 363761400}
   m_RootOrder: 1
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
-  m_AnchorMin: {x: 0.5, y: 0.5}
-  m_AnchorMax: {x: 0.5, y: 0.5}
-  m_AnchoredPosition: {x: -369.5, y: -62.2}
-  m_SizeDelta: {x: 160, y: 55.6}
+  m_AnchorMin: {x: 0, y: 1}
+  m_AnchorMax: {x: 0, y: 1}
+  m_AnchoredPosition: {x: 150, y: -230}
+  m_SizeDelta: {x: 160, y: 55.599976}
   m_Pivot: {x: 0.5, y: 0.5}
 --- !u!114 &918893360
 MonoBehaviour:
@@ -1140,7 +1140,7 @@ MonoBehaviour:
       m_Calls: []
   m_FontData:
     m_Font: {fileID: 10102, guid: 0000000000000000e000000000000000, type: 0}
-    m_FontSize: 20
+    m_FontSize: 22
     m_FontStyle: 0
     m_BestFit: 0
     m_MinSize: 2
@@ -1631,9 +1631,9 @@ RectTransform:
   m_Father: {fileID: 363761400}
   m_RootOrder: 2
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
-  m_AnchorMin: {x: 0.5, y: 0.5}
-  m_AnchorMax: {x: 0.5, y: 0.5}
-  m_AnchoredPosition: {x: -369.5, y: -197}
+  m_AnchorMin: {x: 0, y: 1}
+  m_AnchorMax: {x: 0, y: 1}
+  m_AnchoredPosition: {x: 150, y: -128}
   m_SizeDelta: {x: 200, y: 152}
   m_Pivot: {x: 0.5, y: 0.5}
 --- !u!114 &1305247361