Fix typo in ResizeHandle

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Manipulators/ResizeBorderFrame.cs

             m_StayWithinParentBounds = value;
             foreach (ResizeSideHandle resizeHandle in m_ResizeSideHandles)
             {
-                resizeHandle.stayWithinPanretBounds = value;
+                resizeHandle.stayWithinParentBounds = value;
             }
         }
     }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Manipulators/ResizeSideHandle.cs

 
         bool m_StayWithinParentBounds;
 
-        public bool stayWithinPanretBounds
+        public bool stayWithinParentBounds
         {
             get { return m_StayWithinParentBounds; }
             set { m_StayWithinParentBounds = value; }
                 newLayout.yMax = Mathf.Max(newLayout.yMax + normalizedResizeDelta.y, newLayout.yMin + minSize.y);
             }
 
-            if (stayWithinPanretBounds)
+            if (stayWithinParentBounds)
             {
                 newLayout.xMin = Mathf.Max(newLayout.xMin, 0f);
                 newLayout.yMin = Mathf.Max(newLayout.yMin, 0f);