TUT: fix outdated keywords/syntax

tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/boundaryRadiationProperties

@@ -18,7 +18,7 @@ FoamFile
 
 ".*"
 {
-    mode            lookup;
+    type            lookup;
     emissivity      1.0;
     absorptivity    0.0;
 }

tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/combustionProperties

@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-combustionModel  PaSR<psiChemistryCombustion>;
+combustionModel  PaSR;
 
 active  true;