improve for loop description (copied from 'while let' equivalent)
@@ -148,7 +148,7 @@ for n in 1..11 {
assert_eq!(sum, 55);
```
-A for loop is equivalent to the following block expression.
+A `for` loop is equivalent to a `loop` expression containing a [`match` expression] as follows:
<!-- ignore: expansion example -->
```rust,ignore
