Update dev-guide-new-shield.md

docs/docs/dev-guide-new-shield.md

@@ -17,8 +17,6 @@ The high level steps are:
 - (Optional) Add the matrix transform for mapping KSCAN row/column values to sane key positions. This is needed for non-rectangular keyboards, or where the underlying row/column pin arrangement does not map one to one with logical locations on the keyboard.
 - Add a default keymap, which users can override in their own configs as needed.
 - Add support for features such as encoders, OLED displays, or RGB underglow.
-
-
 - Update build.yml
 
 It may be helpful to review the upstream [shields documentation](https://docs.zephyrproject.org/2.3.0/guides/porting/shields.html#shields) to get a proper understanding of the underlying system before continuing.
@@ -337,4 +335,4 @@ jobs:
 ```
 :::note
 Notice that both the left and right halves of a split board need to be added to the list of shields for proper error checking.
-:::note
+:::note