HDRenderPipeline: Fix various typo for iridescence

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Editor/Material/Lit/LitUI.cs

             CoreUtils.SetKeyword(material, "_DETAIL_MAP", material.GetTexture(kDetailMap));
             CoreUtils.SetKeyword(material, "_SUBSURFACE_MASK_MAP", material.GetTexture(kSubsurfaceMaskMap));
             CoreUtils.SetKeyword(material, "_THICKNESSMAP", material.GetTexture(kThicknessMap));
-            CoreUtils.SetKeyword(material, "_IRIDESCENCE_THICKNESSMAP", material.GetTexture(kIridescenceThickness));
+            CoreUtils.SetKeyword(material, "_IRIDESCENCE_THICKNESSMAP", material.GetTexture(kIridescenceThicknessMap));
             CoreUtils.SetKeyword(material, "_SPECULARCOLORMAP", material.GetTexture(kSpecularColorMap));
 
             bool needUV2 = (UVDetailMapping)material.GetFloat(kUVDetail) == UVDetailMapping.UV2 || (UVBaseMapping)material.GetFloat(kUVBase) == UVBaseMapping.UV2;

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/Lit/Lit.shader

         _ThicknessMap("Thickness Map", 2D) = "white" {}
         _ThicknessRemap("Thickness Remap", Vector) = (0, 1, 0, 0)
 
-        _IridescenceThickness("Thickness sridescence", Range(0.0, 1.0)) = 1.0
+        _IridescenceThickness("Iridescence Thickness", Range(0.0, 1.0)) = 1.0
         _IridescenceThicknessMap("Iridescence Thickness Map", 2D) = "white" {}
         _IridescenceThicknessRemap("Iridescence Thickness Remap", Vector) = (0, 1, 0, 0)
         _IridescenceMask("Iridescence Mask", Range(0.0, 1.0)) = 1.0

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/Lit/LitTessellation.shader

         _ThicknessMap("Thickness Map", 2D) = "white" {}
         _ThicknessRemap("Thickness Remap", Vector) = (0, 1, 0, 0)
 
-        _IridescenceThickness("Thickness sridescence", Range(0.0, 1.0)) = 1.0
+        _IridescenceThickness("Iridescence Thickness", Range(0.0, 1.0)) = 1.0
         _IridescenceThicknessMap("Iridescence Thickness Map", 2D) = "white" {}
         _IridescenceThicknessRemap("Iridescence Thickness Remap", Vector) = (0, 1, 0, 0)
         _IridescenceMask("Iridescence Mask", Range(0.0, 1.0)) = 1.0