correct expected doxygen warnings

Author: jezhiggins

scripts/expected_doxygen_warnings.txt

@@ -97,6 +97,6 @@ warning: Included by graph for 'pointer_expr.h' not generated, too many nodes (1
 warning: Included by graph for 'prefix.h' not generated, too many nodes (86), threshold is 60. Consider increasing DOT_GRAPH_MAX_NODES.
 warning: Included by graph for 'simplify_expr.h' not generated, too many nodes (77), threshold is 60. Consider increasing DOT_GRAPH_MAX_NODES.
 warning: Included by graph for 'std_code.h' not generated, too many nodes (78), threshold is 60. Consider increasing DOT_GRAPH_MAX_NODES.
-warning: Included by graph for 'std_expr.h' not generated, too many nodes (245), threshold is 60. Consider increasing DOT_GRAPH_MAX_NODES.
-warning: Included by graph for 'std_types.h' not generated, too many nodes (122), threshold is 60. Consider increasing DOT_GRAPH_MAX_NODES.
+warning: Included by graph for 'std_expr.h' not generated, too many nodes (244), threshold is 60. Consider increasing DOT_GRAPH_MAX_NODES.
+warning: Included by graph for 'std_types.h' not generated, too many nodes (121), threshold is 60. Consider increasing DOT_GRAPH_MAX_NODES.
 warning: Included by graph for 'symbol_table.h' not generated, too many nodes (95), threshold is 60. Consider increasing DOT_GRAPH_MAX_NODES.