Merge pull request #2360 from n8sh/issue-19398-followup

Update core.atomic.MemoryOrder docs to mention relation to C++11/C11

Author: thewilsonator

src/core/atomic.d

@@ -255,18 +255,28 @@ version (CoreDdoc)
      */
     enum MemoryOrder
     {
-        /// Not sequenced.
-        /// Corresponds to $(LINK2 https://llvm.org/docs/Atomics.html#monotonic, LLVM AtomicOrdering.Monotonic).
+        /++
+        Not sequenced.
+        Corresponds to $(LINK2 https://llvm.org/docs/Atomics.html#monotonic, LLVM AtomicOrdering.Monotonic)
+        and C++11/C11 `memory_order_relaxed`.
+        +/
         raw,
-        /// Hoist-load + hoist-store barrier.
-        /// Corresponds to $(LINK2 https://llvm.org/docs/Atomics.html#acquire, LLVM AtomicOrdering.Acquire).
+        /++
+        Hoist-load + hoist-store barrier.
+        Corresponds to $(LINK2 https://llvm.org/docs/Atomics.html#acquire, LLVM AtomicOrdering.Acquire)
+        and C++11/C11 `memory_order_acquire`.
+        +/
         acq,
-        /// Sink-load + sink-store barrier.
-        /// Corresponds to $(LINK2 https://llvm.org/docs/Atomics.html#release, LLVM AtomicOrdering.Release).
+        /++
+        Sink-load + sink-store barrier.
+        Corresponds to $(LINK2 https://llvm.org/docs/Atomics.html#release, LLVM AtomicOrdering.Release)
+        and C++11/C11 `memory_order_release`.
+        +/
         rel,
         /++
         Fully sequenced (acquire + release). Corresponds to
         $(LINK2 https://llvm.org/docs/Atomics.html#sequentiallyconsistent, LLVM AtomicOrdering.SequentiallyConsistent)
+        and C++11/C11 `memory_order_seq_cst`.
         +/
         seq,
     }