Fix `fix_dump_secrets_from_sid` Example

[cdelafuente-r7]

The endpoint: argument was missing when calling #bind.

• Before the fix

  ❯ ruby examples/dump_secrets_from_sid.rb 10.0.0.24 Administrator 123456 FOOLAB S-1-5-21-419957332-8987628-4871342532-500
  Binding to DRSR...
  /home/msfuser/.rvm/gems/ruby-3.0.2@ruby_smb/gems/bindata-2.4.14/lib/bindata/lazy.rb:71:in `method_missing': undefined method `endpoint' for #<BinData::LazyEvaluator:0x00007feb828c5ff8> (NoMethodError)
  ...

• After the fix

  ❯ ruby examples/dump_secrets_from_sid.rb 10.0.0.24 Administrator 123456 FOOLAB S-1-5-21-419957332-8987628-4871342532-500
  Binding to DRSR...
  Bound to DRSR
  ph_drs: {:context_handle_attributes=>0, :context_handle_uuid=>"3cda99a9-b8a4-4e6b-9339-c9855fd812f8"}
  ...