Dictionaries: use 'e' rather than 'E' in exponential floating point numbers

tutorials/multiphase/interFoam/RAS/propeller/system/snappyHexMeshDict

@@ -391,13 +391,13 @@ meshQualityControls
 
     //- Minimum pyramid volume. Is absolute volume of cell pyramid.
     //  Set to a sensible fraction of the smallest cell volume expected.
-    //  Set to very negative number (e.g. -1E30) to disable.
+    //  Set to very negative number (e.g. -1e30) to disable.
     minVol 1e-13;
 
     //- Minimum quality of the tet formed by the face-centre
     //  and variable base point minimum decomposition triangles and
     //  the cell centre. This has to be a positive number for tracking
-    //  to work. Set to very negative number (e.g. -1E30) to
+    //  to work. Set to very negative number (e.g. -1e30) to
     //  disable.
     //     <0 = inside out tet,
     //      0 = flat tet