Make statement more self-standing

Rather than saying "this also includes", let's make this statement
stand better on its own.  This will be helpful when giving it a rule
identifier, and given how this statement is some distance, visually,
from the other statements due to the examples, it adds clarity.

Author: traviscross

src/types/closure.md

@@ -202,7 +202,7 @@ let c = || match x {  // x is not captured
 c();
 ```
 
-This also includes destructuring of tuples, structs, and single-variant enums.
+Destructuring tuples, structs, and single-variant enums does not, by itself, cause a read or the place to be captured.
 
 ```rust,no_run
 struct S; // A non-`Copy` type.