Merge pull request #1769 from aviad-dev/patch-2

rename `y` to `_y` to get the correct compile error

Author: marioidival

src/scope/lifetime/explicit.md

@@ -40,10 +40,10 @@ fn failed_borrow<'a>() {
     let _x = 12;
 
     // ERROR: `_x` does not live long enough
-    let y: &'a i32 = &_x;
+    let _y: &'a i32 = &_x;
     // Attempting to use the lifetime `'a` as an explicit type annotation 
     // inside the function will fail because the lifetime of `&_x` is shorter
-    // than that of `y`. A short lifetime cannot be coerced into a longer one.
+    // than that of `_y`. A short lifetime cannot be coerced into a longer one.
 }
 
 fn main() {