Update mod.rs

Author: balt-dev

library/alloc/src/collections/vec_deque/mod.rs

@@ -1911,7 +1911,7 @@ impl<T, A: Allocator> VecDeque<T, A> {
     /// ```
     #[unstable(feature = "push_mut", issue = "135974")]
     #[track_caller]
-    #[must_use = "if you don't need a reference to the value, use VecDeque::push_front instead"]
+    #[must_use = "if you don't need a reference to the value, use `VecDeque::push_front` instead"]
     pub fn push_front_mut(&mut self, value: T) -> &mut T {
         if self.is_full() {
             self.grow();
@@ -1957,7 +1957,7 @@ impl<T, A: Allocator> VecDeque<T, A> {
     /// ```
     #[unstable(feature = "push_mut", issue = "135974")]
     #[track_caller]
-    #[must_use = "if you don't need a reference to the value, use VecDeque::push_back instead"]
+    #[must_use = "if you don't need a reference to the value, use `VecDeque::push_back` instead"]
     pub fn push_back_mut(&mut self, value: T) -> &mut T {
         if self.is_full() {
             self.grow();
@@ -2100,7 +2100,7 @@ impl<T, A: Allocator> VecDeque<T, A> {
     /// ```
     #[unstable(feature = "push_mut", issue = "135974")]
     #[track_caller]
-    #[must_use = "if you don't need a reference to the value, use VecDeque::insert instead"]
+    #[must_use = "if you don't need a reference to the value, use `VecDeque::insert` instead"]
     pub fn insert_mut(&mut self, index: usize, value: T) -> &mut T {
         assert!(index <= self.len(), "index out of bounds");