try fix

README.md

@@ -118,13 +118,13 @@ TODO: ... upd8 xylo, put it here
 
 ### Belt Axis
 
-| Fab'd | CAD: [cad/belt_axis/assy_belt_axis.f3z](cad/belt_axis/assy_belt_axis.f3z) | STLs: [cad/belt_axis](cad/belt_axis) |
+| Fab'd | CAD: [CAD/belt_axis/assy_belt_axis.f3z](CAD/belt_axis/assy_belt_axis.f3z) | STLs: [CAD/belt_axis](CAD/belt_axis) |
 | --- | --- | --- |
 | (pic) | ![axis](img/belt_axis.png) | ![stls](img/belt_axis_kit.png) |
 
 ### Rotary Axis [[notes](https://ekswhyzee.com/2019/04/09/gt2-belt-rotary-cad.html)]
 
-| Fab'd | Preview: [cad/rotary_axis/assy_rotary_axis.f3z](cad/rotary_axis/assy_rotary_axis.f3z) | STLs: [cad/rotary_axis](cad/rotary_axis) |
+| Fab'd | Preview: [CAD/rotary_axis/assy_rotary_axis.f3z](CAD/rotary_axis/assy_rotary_axis.f3z) | STLs: [CAD/rotary_axis](CAD/rotary_axis) |
 | --- | --- | --- |
 | (pic) | ![axis](img/rotary_axis.png) | ![stls](img/rotary_axis_kit.png) |
 
@@ -151,7 +151,7 @@ TODO: ... upd8 xylo, put it here
     - electronics / software
     - mechanism
     - documentation 
-    - cad/cam ? 
+    - CAD/cam ? 
 - prototype in cardboard, mechanisms can move 'by hand'
 - commit to your vision (no backtracking)
 - spiral development !