[3p3c] corrected comments

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@13455 2fb0f335-1f38-0410-981e-8018bf24f1b0

dumux/implicit/3p3c/3p3cindices.hh

@@ -70,9 +70,9 @@ public:
 
     //! Index for gas phase pressure in a solution vector
     static const int pgIdx = pressureIdx;
-    //! Index of the either the saturation of the gas phase or the mass fraction secondary component if a phase is not present
+    //! Index of the either the saturation of the wetting phase or the mole fraction secondary component if a phase is not present
     static const int sOrX1Idx = switch1Idx;
-    //! Index of the either the saturation of the gas phase or the mass fraction secondary component if a phase is not present
+    //! Index of the either the saturation of the nonwetting phase or the mole fraction secondary component if a phase is not present
     static const int sOrX2Idx = switch2Idx;
 
     // equation indices