Style: Change FreeRTOS websites in comments (#131)

* Style: Change FreeRTOS websites in comments

* Style: Change freertos to FreeRTOS in comments

* Style: Remove broken link

Co-authored-by: Alfred Gedeon <gedeonag@amazon.com>
diff --git a/include/stack_macros.h b/include/stack_macros.h
index f145d7e..bb6f25d 100644
--- a/include/stack_macros.h
+++ b/include/stack_macros.h
@@ -19,8 +19,8 @@
  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

  *

- * http://www.FreeRTOS.org

- * http://aws.amazon.com/freertos

+ * https://www.FreeRTOS.org

+ * https://github.com/FreeRTOS

  *

  */