Fix formatting

Author: balt-dev

library/alloc/src/vec/mod.rs

@@ -2503,7 +2503,7 @@ impl<T, A: Allocator> Vec<T, A> {
         Ok(())
     }
 
-        /// Appends an element to the back of a collection, returning a reference to it.
+    /// Appends an element to the back of a collection, returning a reference to it.
     ///
     /// # Panics
     ///
@@ -2517,7 +2517,7 @@ impl<T, A: Allocator> Vec<T, A> {
     /// # #[allow(unused)]
     /// #[derive(PartialEq, Eq, Debug)]
     /// struct Item { identifier: &'static str, count: usize }
-    /// 
+    ///
     /// impl Default for Item {
     ///     fn default() -> Self {
     ///         return Self { identifier: "stone", count: 64 }
@@ -2579,13 +2579,14 @@ impl<T, A: Allocator> Vec<T, A> {
     /// # Time complexity
     ///
     /// Takes *O*(1) time.
-    #[inline]
-
+    //
     // Since there's currently no way to have multiple unstable attributes on the same item, I compromised.
     // Uncomment/delete the respective attribute when its respective issue stabilizes, since this falls under both.
+    //
     #[unstable(feature = "push_mut", issue = "135974")]
     // #[unstable(feature = "vec_push_within_capacity", issue = "100486")]
-
+    //
+    #[inline]
     #[must_use = "if you don't need a reference to the value, use Vec::push_within_capacity instead"]
     pub fn push_mut_within_capacity(&mut self, value: T) -> Result<&mut T, T> {
         if self.len == self.buf.capacity() {