message: Fix README: 'A program' -> 'An example'
diff: @@ -89,7 +89,7 @@ To build the examples for your board you can use
  make <platform> [FEATURES=alloc]
  ```
  -A program can be flashed to your board after the build process by running:
  +An example can be flashed to your board after the build process by running:
  ```shell
  make flash-<platform> EXAMPLE=<example>
  