Update README.md

Author: PaulZC

README.md

@@ -29,9 +29,9 @@ Click the CAMmer icon to open the GUI:
 
 We have deliberately kept the GUI options as simple as possible:
 
-* In the `Layers` column: select your copper, silkscreen and solder mask layers
+* In the **Layers** column: select your copper, silkscreen and solder mask layers
   * The CAMmer will select these for you based on the number of copper layers, but you can override if you want to
-* In the `Edges` column: select which layer(s) will be used to generate the board outline
+* In the **Edges** column: select which layer(s) will be used to generate the board outline
   * For SparkFun panels, the default is `Edge.Cuts` plus `User.Comments` (the SparkFun KiCad Panelizer places the V-SCORE information in `User.Comments` by default)
 
 Click **Run CAMmer** to run the CAMmer. The Gerber and drill files are created and zipped automatically.