Clarify property renaming example

This section steps the reader through how properties can 
be renamed. Here, the point is that types must be added 
separately, after the entire destructuring-with-rename has
been accomplished. But as currently written, this line has 
dropped the property renaming. The example is clearer if 
the property renaming remains, so the only difference is
the introduction of the type annotations.

Author: peashutop

packages/documentation/copy/en/reference/Variable Declarations.md

@@ -592,7 +592,7 @@ Confusingly, the colon here does _not_ indicate the type.
 The type, if you specify it, still needs to be written after the entire destructuring:
 
 ```ts
-let { a, b }: { a: string; b: number } = o;
+let { a: newName1, b: newName2 }: { a: string; b: number } = o;
 ```
 
 ### Default values