[atomics.ref.pointer,atomics.types.pointer] Use 'see above' for fetch_key declaration

Fixes NB US 198-317 (C++26 CD).

Author: jensmaurer

source/threads.tex

@@ -4263,7 +4263,7 @@
 \indexlibrarymember{fetch_max}{atomic_ref<\placeholder{pointer-type}>}%
 \indexlibrarymember{fetch_min}{atomic_ref<\placeholder{pointer-type}>}%
 \begin{itemdecl}
-constexpr value_type fetch_@\placeholdernc{key}@(difference_type operand,
+constexpr value_type fetch_@\placeholdernc{key}@(@\seeabovenc@ operand,
                      memory_order order = memory_order::seq_cst) const noexcept;
 \end{itemdecl}
 
@@ -4312,7 +4312,7 @@
 \indexlibrarymember{store_max}{atomic_ref<\placeholder{pointer-type}>}%
 \indexlibrarymember{store_min}{atomic_ref<\placeholder{pointer-type}>}%
 \begin{itemdecl}
-constexpr void store_@\placeholdernc{key}@(@\UNSP{see above}@ operand,
+constexpr void store_@\placeholdernc{key}@(@\seeabovenc@ operand,
                      memory_order order = memory_order::seq_cst) const noexcept;
 \end{itemdecl}
 
@@ -5871,8 +5871,8 @@
 \indexlibrarymember{fetch_min}{atomic<T*>}%
 \indexlibrarymember{fetch_sub}{atomic<T*>}%
 \begin{itemdecl}
-T* fetch_@\placeholdernc{key}@(ptrdiff_t operand, memory_order order = memory_order::seq_cst) volatile noexcept;
-constexpr T* fetch_@\placeholdernc{key}@(ptrdiff_t operand, memory_order order = memory_order::seq_cst) noexcept;
+T* fetch_@\placeholdernc{key}@(@\seeabovenc@ operand, memory_order order = memory_order::seq_cst) volatile noexcept;
+constexpr T* fetch_@\placeholdernc{key}@(@\seeabovenc@ operand, memory_order order = memory_order::seq_cst) noexcept;
 \end{itemdecl}
 
 \begin{itemdescr}