Spelling correction

display.h

@@ -11,7 +11,7 @@
 
 #include <stdlib.h>
 
-/** @defgroup disply Display
+/** @defgroup display Display
  * @details This provides a silly way to display messages.
  * @pre There are no prerequisites.
  * @{
@@ -20,7 +20,7 @@
 	extern "C" {
 #endif
 
-#define HELLO_WORLD    "Hello world!" /**< A hello world strgin. */
+#define HELLO_WORLD    "Hello world!" /**< A hello world string. */
 #define GOODBYE_WORLD  "Goodbye cruel world" /**< A goodbye world string. */
 #define TEST_MESSAGE  "Test message" /**< Just a test message. */