gdb/testsuite: fix argument order in example code within a comment

Small typo in some example code inside a comment; the arguments were
in the wrong order.

There's no functional change after this commit.

gdb/testsuite/lib/gdb.exp

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 6c4ffc1..c993f48 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -9290,7 +9290,7 @@
 #
 # Example:
 # proc myproc {foo args} {
-#   parse_list args 1 {{bar} {baz "abc"} {qux}} "-" false
+#   parse_list 1 args {{bar} {baz "abc"} {qux}} "-" false
 #    # ...
 # }
 # myproc ABC -bar -baz DEF peanut butter