linalg : 例のarrayの初期化を修正(#1233)

Signed-off-by: Yuya Asano <64895419+sukeya@users.noreply.github.com>

Author: sukeya

reference/linalg/vector_abs_sum.md

@@ -85,7 +85,7 @@ int main()
 {
   constexpr size_t N = 4;
 
-  std::array<double, N> vec(N);
+  std::array<double, N> vec;
 
   std::mdspan v(vec.data(), N);
 

reference/linalg/vector_idx_abs_max.md

@@ -58,7 +58,7 @@ int main()
 {
   constexpr size_t N = 4;
 
-  std::array<double, N> vec(N);
+  std::array<double, N> vec;
 
   std::mdspan v(vec.data(), N);
 

reference/linalg/vector_two_norm.md

@@ -77,11 +77,13 @@ int main()
 {
   constexpr size_t N = 4;
 
-  std::array<double, N> vec(N);
+  std::array<double, N> vec;
 
   std::mdspan v(vec.data(), N);
 
-  for(int i = 0; i < v.extent(0); ++i) v(i) = std::pow(-1.0, i) / (i + 1);
+  for(int i = 0; i < v.extent(0); ++i) {
+    v(i) = std::pow(-1.0, i) / (i + 1);
+  }
 
   std::cout << std::linalg::vector_two_norm(v, 1.0 / 5) << '\n'                      // (1)
             << std::linalg::vector_two_norm(std::execution::par, v, 1.0 / 5) << '\n' // (2)