Update Dye Desal NF Pressure

[MarcusHolly]

Summary/Motivation:

Updates the NF applied pressure based on feedback from our collaborators

Changes proposed in this PR:

• Update applied pressure
• Fix minor typo in testing

Legal Acknowledgement

By contributing to this software project, I agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the license terms described in the LICENSE.txt file at the top level of this directory.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.