Update wording

Author: bernhardmgruber

docs/libcudacxx/extended_api/asynchronous_operations/memcpy_async.rst

@@ -152,7 +152,7 @@ Related traits
    template <typename Group>
    constexpr inline bool is_thread_block_group_v;
 
-This trait is ``true`` if ``Group`` represents a CUDA thread block.
+This trait is ``true`` if ``Group`` represents the full CUDA thread block.
 For example, ``cooperative_groups::thread_block`` satisfies this trait.
 Users are encouraged to specialize this trait for their own groups.
 
@@ -161,7 +161,7 @@ Users are encouraged to specialize this trait for their own groups.
    template <typename Group>
    constexpr inline bool is_warp_group_v = false;
 
-This trait is ``true`` if ``Group`` represents a CUDA warp.
+This trait is ``true`` if ``Group`` represents a full CUDA warp.
 For example, ``cooperative_groups::thread_block_tile<32, ...>`` satisfies this trait.
 Users are encouraged to specialize this trait for their own groups.