Update 10 files

- /docs/assignments/week04.md
- /docs/assignments/week05.md
- /docs/assignments/week06.md
- /docs/assignments/week07.md
- /docs/assignments/week08.md
- /docs/assignments/week09.md
- /docs/assignments/week10.md
- /docs/assignments/week11.md
- /docs/assignments/week12.md
- /docs/assignments/week13.md

docs/assignments/week04.md

-
-# 4. BioChromes
+# 04 BioChromes
 
 ## Research
 

docs/assignments/week05.md

 
-# 5. E-textiles
+# 05 E-textiles
 
 ## Research
 

docs/assignments/week06.md

-# 6. BioFabricating Materials
+# 06 BioFabricating Materials
 
 ## Research
 

docs/assignments/week07.md

-# 7. Computational Couture
+# 07 Computational Couture
 
 # Research & Ideation
 

docs/assignments/week08.md

-# 8. Wearables
+# 08 Wearables
 
 ## Research
 

docs/assignments/week09.md

-# 9. Textile Scaffold
+# 09 Textile Scaffold
 
 ## Research
 

docs/assignments/week10.md

-# 10. Open Source Hardware - From Fibers to Fabric
+# 10 Open Source Hardware - From Fibers to Fabric
 
 ## Research & Ideation
 

docs/assignments/week11.md

-# 11. Implications and applications
+# 11 Implications and applications
 
 
 ## Research & Concept

docs/assignments/week12.md

-# 12. Soft robotics
+# 12 Soft robotics
 
 ## Research
 

docs/assignments/week13.md

-# 13. Skin Electronics
+# 13 Skin Electronics
 
 ## Research