[BC6H] Renamed argument

ScriptableRenderPipeline/Core/TextureCache.cs

             TransferToSlice(cmd, sliceIndex, content);
         }
 
-        public void SetSliceHash(int sliceIndex, uint updateCount)
+        public void SetSliceHash(int sliceIndex, uint hash)
-            m_SliceArray[sliceIndex].sliceEntryHash = updateCount;
+            m_SliceArray[sliceIndex].sliceEntryHash = hash;
         }
 
         public void UpdateSlice(CommandBuffer cmd, int sliceIndex, Texture content)