Use correct order of saturation names

Due to a glitch the order of the names was put incorrectly in the file,
even though the comment stressed that it was important it was right!

Hat tip: @bska

opm/core/io/eclipse/EclipseWriter.cpp

@@ -669,9 +669,7 @@ static double pasToBar (double pressureInPascal) {
 
 /// Names of the saturation property for each phase. The order of these
 /// names are critical; they must be the same as the BlackoilPhases enum
-static const char* SAT_NAMES[] = {
-    "SOIL", "SWAT", "SGAS"
-};
+static const char* SAT_NAMES[] = { "SWAT", "SOIL", "SGAS" };
 
 } // namespace Opm::internal