IfcApplication - incorrect formal proposition in docs (UR2 : ApplicationFullName, Version)

https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcApplication.htm

Docs:


Express rule:
```
UR2 : ApplicationFullName, Version;
```

So I assume it should be "The combination of attributes ApplicationFullName and Version, should be unique", otherwise it seems that just ApplicationFullName should be unique.

Start with the linked IFC4x3 IfcApplication documentation page and compare the UR2 rule with its explanatory wording. Update the proposition so it accurately describes the uniqueness of the ApplicationFullName and Version combination, then verify the rendered documentation reflects the correction.

Written by the indexing model from the issue text.