doxygen: small fixes and tag adding

source/blender/makesdna/DNA_actuator_types.h

@@ -237,12 +237,12 @@ typedef struct bActuator {
 	char name[32];
 
 	/**
-	 * \var Data must point to an object actuator type struct.
+	 * data must point to an object actuator type struct.
 	 */
 	void *data;
 
 	/**
-	 * \var For ipo's and props: to find out which object the actuator
+	 * For ipo's and props: to find out which object the actuator
 	 * belongs to */
 	struct Object *ob;		
 	

source/blender/makesdna/intern/dna_genfile.c

@@ -31,6 +31,11 @@
  * DNA handling
  */
 
+/** \file blender/makesdna/intern/dna_genfile.c
+ *  \ingroup DNA
+ */
+
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>