Also rename the lint in test files

tests/ui/eta.fixed

@@ -11,7 +11,7 @@
 )]
 #![warn(
     clippy::redundant_closure,
-    clippy::redundant_closures_for_method_calls,
+    clippy::redundant_closure_for_method_calls,
     clippy::needless_borrow
 )]
 

tests/ui/eta.rs

@@ -11,7 +11,7 @@
 )]
 #![warn(
     clippy::redundant_closure,
-    clippy::redundant_closures_for_method_calls,
+    clippy::redundant_closure_for_method_calls,
     clippy::needless_borrow
 )]
 

tests/ui/eta.stderr

@@ -38,7 +38,7 @@ error: redundant closure found
 LL |     let e = Some(TestStruct { some_ref: &i }).map(|a| a.foo());
    |                                                   ^^^^^^^^^^^ help: remove closure as shown: `TestStruct::foo`
    |
-   = note: `-D clippy::redundant-closures-for-method-calls` implied by `-D warnings`
+   = note: `-D clippy::redundant-closure-for-method-calls` implied by `-D warnings`
 
 error: redundant closure found
   --> $DIR/eta.rs:77:51

tests/ui/map_clone.fixed

@@ -3,7 +3,7 @@
 #![allow(clippy::iter_cloned_collect)]
 #![allow(clippy::clone_on_copy)]
 #![allow(clippy::missing_docs_in_private_items)]
-#![allow(clippy::redundant_closures_for_method_calls)]
+#![allow(clippy::redundant_closure_for_method_calls)]
 
 fn main() {
     let _: Vec<i8> = vec![5_i8; 6].iter().copied().collect();

tests/ui/map_clone.rs

@@ -3,7 +3,7 @@
 #![allow(clippy::iter_cloned_collect)]
 #![allow(clippy::clone_on_copy)]
 #![allow(clippy::missing_docs_in_private_items)]
-#![allow(clippy::redundant_closures_for_method_calls)]
+#![allow(clippy::redundant_closure_for_method_calls)]
 
 fn main() {
     let _: Vec<i8> = vec![5_i8; 6].iter().map(|x| *x).collect();