fix: correct title wording in example Arm DS project documentation

Author: madeline-underwood

content/learning-paths/embedded-and-microcontrollers/context-switch-cortex-m/example.md

@@ -1,6 +1,6 @@
 ---
 # User change
-title: Example Arm DS project for demonstrate context switching operations
+title: Example Arm DS project to demonstrate context switching operations
 
 weight: 2 # 1 is first, 2 is second, etc.