Change "alloc/realloc" to "realloc/dealloc"

src/libcore/alloc.rs

@@ -1046,7 +1046,7 @@ unsafe fn shrink_in_place(&mut self,
     /// Captures a common usage pattern for allocators.
     ///
     /// The returned block is suitable for passing to the
-    /// `alloc`/`realloc` methods of this allocator.
+    /// `realloc`/`dealloc` methods of this allocator.
     ///
     /// Note to implementors: If this returns `Ok(ptr)`, then `ptr`
     /// must be considered "currently allocated" and must be
@@ -1112,7 +1112,7 @@ unsafe fn dealloc_one<T>(&mut self, ptr: NonNull<T>)
     /// Captures a common usage pattern for allocators.
     ///
     /// The returned block is suitable for passing to the
-    /// `alloc`/`realloc` methods of this allocator.
+    /// `realloc`/`dealloc` methods of this allocator.
     ///
     /// Note to implementors: If this returns `Ok(ptr)`, then `ptr`
     /// must be considered "currently allocated" and must be
@@ -1159,7 +1159,7 @@ fn alloc_array<T>(&mut self, n: usize) -> Result<NonNull<T>, AllocErr>
     /// Captures a common usage pattern for allocators.
     ///
     /// The returned block is suitable for passing to the
-    /// `alloc`/`realloc` methods of this allocator.
+    /// `realloc`/`dealloc` methods of this allocator.
     ///
     /// # Safety
     ///