Update week04.md

docs/assignments/week04.md

@@ -322,7 +322,8 @@ Steps:
 
 ###Inoculating
 
-**Two techniques to dye with bacteria:**<br>
+**Two techniques to dye with bacteria:**
+
 * Grow bacteria directly on the fabric (what we're doing)
 * Extract the color and dying with that (will learn later)