test/utils.vim: fix Git_commit_msg

test/addFile/addFile_books_models_py_commit.expect

test/addFile/addFile_bootstrap_commit.expect

test/addFile/addFile_bootstrap_lnk_commit.expect

test/addFile/addFile_bootstrap_with_spaces_commit.expect

test/addFile/addFile_bootstrap_with_spaces_lnk_commit.expect

test/addFile/addFile_empty_file_commit.expect

test/addFile/addFile_empty_file_with_spaces_commit.expect

test/addFile/addFile_modnano_png_commit.expect

test/addFile/addFile_nanopdf_png_commit.expect

test/addHunk/addHunk_books_models_py_commit.expect

test/addHunk/addHunk_bootstrap_commit.expect

test/utils.vim