Fixing documentation

example/Grid/0_simple/Makefile

example/Grid/1_stencil/Makefile

example/Grid/2_solve_eq/Makefile

example/Grid/3_gray_scott/Makefile

example/SE/0_classes/Makefile

example/SE/1_classes/Makefile

example/VCluster/0_simple/Makefile

example/VCluster/0_simple/main.cpp

example/Vector/1_celllist/main.cpp

example/Vector/4_multiphase_celllist/main.cpp

example/Vector/4_reorder/Makefile

example/Vector/4_reorder/main_comp_ord.cpp

example/Vector/4_reorder/main_data_ord.cpp

src/Vector/vector_dist.hpp

src/Vector/vector_dist_unit_test.hpp