Diffing: diffing of parameters should yield more specific log

#### Description:

Currently, when comparing objects of type `RevitParameter`, regardless of which property gets changed (`Value`, `UnitType`, `IsReadOnly`), it is always reported as _'The value assigned to the property `MyName (RevitParameter)` was modified (...)'_ - so from the description of `PropertyDifference` we can't tell _which_ property of `RevitParameter` has changed. This is rather an edge case, but still would be good to fix it at some point.

#### Test file(s):

On [SharePoint](https://burohappold.sharepoint.com/sites/BHoM/02_Current/Forms/AllItems.aspx?FolderCTID=0x0120008122C8891F89054B8ACED0196C70DFC4&id=%2Fsites%2FBHoM%2F02%5FCurrent%2F12%5FScripts%2F01%5FIssue%2FBHoM%2FRevit%5FToolkit%2F%231493%2DParameterDiffing)