compressible::alphatWallBoilingWallFunction: Naming consistency

Tutorials have been updated to use the new consistent names within the
wall boiling system. The changes are backwards compatible so all
tutorials should run both before and after this change.

tutorials/modules/multiphaseEuler/titaniaSynthesisSurface/system/controlDict

@@ -59,7 +59,7 @@ functions
         funcName=graph,
         start=(0 0 1e-3),
         end=(0.44 0 1e-3),
-        fields=(TiCl4.vapor O2.vapor Cl2.vapor alpha.particles)
+        fields=(TiCl4.vapour O2.vapour Cl2.vapour alpha.particles)
     )
 
     #includeFunc populationBalanceSizeDistribution