Fix a test that was comparing against the old breakpoint subcommand list.

Author: jimingham

lldb/test/Shell/Commands/command-wrong-subcommand-error-msg.test

@@ -4,5 +4,5 @@
 # RUN: not %lldb -b -o 'breakpoint foo' %t.out -o exit 2>&1 | FileCheck %s --check-prefix BP-MSG
 # RUN: not %lldb -b -o 'watchpoint set foo' %t.out -o exit 2>&1 | FileCheck %s --check-prefix WP-MSG
 # CHECK: at main.c:2:21
-# BP-MSG: "foo" is not a valid subcommand of "breakpoint". Valid subcommands are: add, clear, command, delete, disable, enable, and others. Use "help breakpoint" to find out more.
+# BP-MSG: "foo" is not a valid subcommand of "breakpoint". Valid subcommands are: add, clear, command, delete, disable, and others. Use "help breakpoint" to find out more.
 # WP-MSG: "foo" is not a valid subcommand of "watchpoint set". Valid subcommands are: expression, variable. Use "help watchpoint set" to find out more.