fixed parameter names documentation (#378)

diff --git a/include/message_buffer.h b/include/message_buffer.h
index 96a1910..b7428ad 100644
--- a/include/message_buffer.h
+++ b/include/message_buffer.h
@@ -737,7 +737,7 @@
  * message_buffer.h

  *

  * <pre>

- * BaseType_t xMessageBufferSendCompletedFromISR( MessageBufferHandle_t xStreamBuffer, BaseType_t *pxHigherPriorityTaskWoken );

+ * BaseType_t xMessageBufferSendCompletedFromISR( MessageBufferHandle_t xMessageBuffer, BaseType_t *pxHigherPriorityTaskWoken );

  * </pre>

  *

  * For advanced users only.

@@ -753,7 +753,7 @@
  * See the example implemented in FreeRTOS/Demo/Minimal/MessageBufferAMP.c for

  * additional information.

  *

- * @param xStreamBuffer The handle of the stream buffer to which data was

+ * @param xMessageBuffer The handle of the stream buffer to which data was

  * written.

  *

  * @param pxHigherPriorityTaskWoken *pxHigherPriorityTaskWoken should be

@@ -777,7 +777,7 @@
  * message_buffer.h

  *

  * <pre>

- * BaseType_t xMessageBufferReceiveCompletedFromISR( MessageBufferHandle_t xStreamBuffer, BaseType_t *pxHigherPriorityTaskWoken );

+ * BaseType_t xMessageBufferReceiveCompletedFromISR( MessageBufferHandle_t xMessageBuffer, BaseType_t *pxHigherPriorityTaskWoken );

  * </pre>

  *

  * For advanced users only.

@@ -794,7 +794,7 @@
  * See the example implemented in FreeRTOS/Demo/Minimal/MessageBufferAMP.c for

  * additional information.

  *

- * @param xStreamBuffer The handle of the stream buffer from which data was

+ * @param xMessageBuffer The handle of the stream buffer from which data was

  * read.

  *

  * @param pxHigherPriorityTaskWoken *pxHigherPriorityTaskWoken should be