Small change to serialized property in lightweight asset.

ScriptableRenderPipeline/LightweightPipeline/LightweightPipelineAsset.asset

   m_Script: {fileID: 11500000, guid: bf2edee5c58d82540a51f03df9d42094, type: 3}
   m_Name: LightweightPipelineAsset
   m_EditorClassIdentifier: 
-  m_MaxAdditionalPixelLights: 4
+  m_MaxPixelLights: 4
   m_SupportsVertexLight: 0
   m_SupportSoftParticles: 0
   m_MSAA: 4