Update dumptosheet.md

Author: ws-garcia

docs/api/methods/dumptosheet.md

@@ -15,7 +15,7 @@ Dumps the data from the current instance to an Excel WorkSheet.
 
 ## Syntax
 
-*expression*.`DumpToSheet`*({WBookName}, {SheetName}, {RngName:= "A1"})*
+*expression*.`DumpToSheet`*(\[WBookName\], \[SheetName\], \[RngName:= "A1"\])*
 
 ### Parameters