Corrected comments to conform to Mark's orthography rules ;-)

src/finiteVolume/fvMatrices/fvMatrix/fvMatrix.C

@@ -227,7 +227,7 @@ Foam::fvMatrix<Type>::fvMatrix
         );
     }
 
-    // Update the boundary coefficients of psi without changing it's event No.
+    // Update the boundary coefficients of psi without changing its event No.
     GeometricField<Type, fvPatchField, volMesh>& psiRef =
        const_cast<GeometricField<Type, fvPatchField, volMesh>&>(psi_);
 

src/lagrangian/molecularDynamics/molecule/interactionLists/referredCell/referredCell.H

@@ -170,7 +170,7 @@ public:
 
     // Member Functions
 
-        //- Take this referredCell object that has already had it's transform
+        //- Take this referredCell object that has already had its transform
         //  calculated and refer it on again, retaining same source info.
         referredCell reRefer
         (