Update 8 files

- /docs/images/week07/final.jpg
- /docs/images/week07/lace1.jpg
- /docs/images/week07/lace2.jpg
- /docs/images/week07/noise1.jpg
- /docs/images/week07/noise2.jpg
- /docs/images/week07/noise3.jpg
- /docs/images/week07/printer1.jpg
- /docs/assignments/week07.md