Fix Parameter(s).swift file naming

[rchatham]

Describe your changes

There is an 's' in the object name that is missing from the file name.

Issue ticket number and link

Checklist before requesting a review

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests.
• Do we need to implement analytics?
• Will this be part of a product update? If yes, please write one phrase about this update.