addressing doc comments

Signed-off-by: niranda perera <niranda.perera@gmail.com>

Author: nirandaperera

cpp/include/rapidsmpf/buffer/pinned_memory_resource.hpp

@@ -295,7 +295,7 @@ class PinnedHostBuffer {
 
     /**
      * @brief Constructs a pinned host buffer by copying data asynchronously from another
-     * buffer on the same stream.
+     * buffer on the same stream as @p other.
      *
      * @tparam OtherBufferT The type of the other buffer to copy from. Eg.
      * `rmm::device_buffer` or `PinnedHostBuffer`.
@@ -379,6 +379,9 @@ class PinnedHostBuffer {
     /**
      * @brief Sets the CUDA stream for this buffer.
      *
+     * @note This operation does not synchronize current `stream_` before setting the
+     * @p stream.
+     *
      * @param stream The new CUDA stream to use for memory operations.
      */
     constexpr void set_stream(rmm::cuda_stream_view stream) noexcept {