Fix typo

wiki/Bill-of-Materials.md

@@ -29,7 +29,7 @@ x1 per toolhead
 - [1] 6x3mm magnet (N52 Highly recommended to counter the pull from the umbilicals. Note that most magnets not from a reputable source may say N52 but aren't actually. Recommend one of the two links below.)
 - [2] m3x6 or m3x8 FHCS (Flat head countersunk screw, MUST BE MAGNETIC. no stainless, as per TAP)
 - [1] [OptoTap](https://s.click.aliexpress.com/e/_DEGsGTV) (only the sensor PCB is required)
-- [1] m3x8 BHSC (optional in v1.1)
+- [1] m3x8 BHCS (optional in v1.1)
 
 
 **The list bellow is in addition to the Stealthburner BOM above.**
@@ -40,7 +40,7 @@ x1 per toolhead
 - [1] m3x12 BHCS (optional to keep spacer in place)
 - [2] m3x35 SHCS
 - [2] m3 heat inserts
-- [2] m3x8 BHSC (optional in v1.1)
+- [2] m3x8 BHCS (optional in v1.1)
 
 ** Note: Dragonburner extended mount is required depending on extruder**
 
@@ -49,7 +49,7 @@ x1 per toolhead
 
 - [1] m3x12 BHCS (to hold the sherpa mount in place)
 - [2] m3 heat inserts
-- [2] m3x8 BHSC (optional in v1.1)
+- [2] m3x8 BHCS (optional in v1.1)
 
 
 ## Endstops