doc: grammarcheck new pkg/private functions * absolute_pathname.m, build.m, configure_make.m, copy_files.m, create_pkgadddel.m, describe.m, dirempty.m, extract_pkg.m, finish_installation.m, fix_depends.m, fix_version.m, generate_lookfor_cache.m, get_description.m, get_forge_download.m, get_unsatisfied_deps.m, getarch.m, getarchdir.m, getarchprefix.m, install.m, installed_packages.m, is_architecture_dependent.m, list_forge_packages.m, load_package_dirs.m, load_packages.m, load_packages_and_dependencies.m, packinfo_copy_file.m, parse_pkg_idx.m, prepare_installation.m, print_package_description.m, rebuild.m, repackage.m, save_order.m, shell.m, uninstall.m, unload_packages.m, verify_directory.m, write_index.m: grammarcheck new pkg/private functions

--- a/scripts/pkg/private/fix_depends.m
+++ b/scripts/pkg/private/fix_depends.m
@@ -18,7 +18,7 @@
 ## <http://www.gnu.org/licenses/>.
 
 ## -*- texinfo -*-
-## @deftypefn  {Function File} {@var{deps_cell} =} fix_depends (@var{depends})
+## @deftypefn {Function File} {@var{deps_cell} =} fix_depends (@var{depends})
 ## Undocumented internal function.
 ## @end deftypefn