Whitespace and doxygen fix

Change-Id: I7b6ad050051854120dc8031b17da6aec0e644be3

tools/check_seapp.c

@@ -230,6 +230,8 @@ int check_type(sepol_policydb_t *db, char *type) {
  * 	The key map to check
  * @param lineno
  * 	The line number in the source file for the corresponding key map
+ * @return
+ * 	1 if valid, 0 if invalid
  */
 static int key_map_validate(key_map *m, int lineno) {