Update printhead.md

changed t-nut to m3 nut (error on the doc for the printhead bom)

docs/vz330_mellow/gantry/printhead.md

@@ -112,7 +112,7 @@ In this section we'll assemble the Toolhead for the VzBot.
 > Required
 >
 > • Box 6 - M3 x 6mm  
-> • Box 6 - M3 t-nut
+> • Box 6 - M3 nut
 
 | Part                       | Location                                |
 | :------------------------- | :-------------------------------------- |
@@ -239,4 +239,4 @@ Also make sure that all screws are tightn and that the heatbreak is tight agains
 [Goliath 2510 fan duct]: https://github.com/VzBoT3D/Goliath/blob/main/STL/Air%20Cool%20Fan%20duct/Fan%20duct%202510-With%20flange%20for%20Vz-Printhead%20CNC.stl
 [Upper duct CPAP c-clamp]: https://github.com/VzBoT3D/Vz-Printhead-CNC/blob/main/STLs/CPAP%20turbo%20cooling%20system/STLs/c-clamp.stl
 [Upper duct mount]: https://github.com/VzBoT3D/Vz-Printhead-CNC/blob/main/STLs/CPAP%20turbo%20cooling%20system/STLs/upper%20duct%20mount.stl
-[X end stop switch mount]: https://github.com/VzBoT3D/Vz-Printhead-CNC/blob/main/STLs/X-endstop-mount.stl
+[X end stop switch mount]: https://github.com/VzBoT3D/Vz-Printhead-CNC/blob/main/STLs/X-endstop-mount.stl