NEWS wording & improvement

NEWS.md

@@ -111,7 +111,7 @@ rowwiseDT(
 
 13. Restore some join operations on `x` and `i` (e.g. an anti-join `x[!i]`)  where `i` is an extended data.frame, but not a data.table (e.g. a `tbl`), [#6501](https://github.com/Rdatatable/data.table/issues/6501). Thanks @MichaelChirico for the report and PR.
 
-14. `setDT()` no longer modifies the class of other names bound to the origin data.frame - e.g., argument DFs names at a caller to a function which uses setDT. Cf [#4784](https://github.com/Rdatatable/data.table/issues/4784). Thanks @OfekShilon for the report and fix.
+14. `setDT()` no longer modifies the class of other names bound to the origin data.frame, e.g., in `DF1 <- data.frame(a=1); DF2 <- DF1; setDT(DF2)`, `DF1`'s class will not change. [#4784](https://github.com/Rdatatable/data.table/issues/4784). Thanks @OfekShilon for the report and fix.
 
 ## NOTES