Cleanup: fix typos in source code

add_mesh_BoltFactory/createMesh.py

add_mesh_extra_objects/add_mesh_rocks/randomize_texture.py

add_mesh_extra_objects/add_mesh_rocks/rockgen.py

add_mesh_extra_objects/add_mesh_rocks/utils.py

amaranth/render/render_output_z.py

archimesh/achm_kitchen_maker.py

curve_tools/cad.py

curve_tools/curves.py

curve_tools/remove_doubles.py

greasepencil_tools/line_reshape.py

greasepencil_tools/prefs.py

greasepencil_tools/rotate_canvas.py

greasepencil_tools/timeline_scrub.py

io_coat3D/__init__.py

io_export_paper_model.py

io_import_dxf/__init__.py

io_import_palette/__init__.py

io_import_palette/import_ase.py

io_mesh_stl/__init__.py

io_mesh_stl/stl_utils.py