Merge branch 'cleanup/fix-typos' into 'master'

cmake/modules/DunePolicy.cmake

dune/common/arraylist.hh

dune/common/parallel/indicessyncer.hh

dune/common/parallel/remoteindices.hh

dune/common/parallel/test/selectiontest.cc

dune/common/parallel/variablesizecommunicator.hh

dune/common/simd/DESIGN.md

dune/common/test/testsuite.hh

dune/common/test/typelisttest.cc

dune/common/transpose.hh

dune/python/test/test_embed1.cc

python/dune/generator/cmakebuilder.py