Fix failing spelling check (#3153)

Exclude SVGs from spelling check
Fix palette spelling

Author: sciencewhiz

.github/workflows/CI.yml

@@ -158,6 +158,8 @@ jobs:
           locale: "US"
           reporter: "github-check"
           fail_level: "error"
+          exclude: | 
+            **/*.svg
           
   check-redirects:
     runs-on: ubuntu-22.04

source/docs/software/wpilib-tools/robotbuilder/writing-code/robotbuilder-drive-tank.rst

@@ -17,7 +17,7 @@ Create a subsystem called Drive Train. Its responsibility will be to handle the
 Inside the Drive Train, create a Differential Drive object. The Differential Drive object can contain a left motor controller and a right motor controller.
 
 .. image:: images/driving-with-joysticks-speed-controller.png
-   :alt: Dragging motor controller from pallete to tree
+   :alt: Dragging motor controller from palette to tree
 
 Create two Motor Controllers in the Differential Drive, and two more outside the Differential Drive, inside the Drive Train subsystem.