mdspan cleanup

Author: gonzalobg

labs/lab2_mdspan/mdspan.ipynb

@@ -148,7 +148,8 @@
     "void initial_condition(grid_t u_new, grid_t u_old) {\n",
     "  std::fill_n(std::execution::par, u_old.data_handle(), u_old.size(), 0.0);\n",
     "  std::fill_n(std::execution::par, u_new.data_handle(), u_new.size(), 0.0);\n",
-    "}```\n",
+    "}\n",
+    "```\n",
     "\n",
     "Notice that we have dropped the function argument `n`, and that we continue to use `fill_n` by writing directly to the data behind the `mdspan`.\n",
     "For containers like `std::vector`, a handle to the data can be obtained by just calling the `vec.data()` member function.\n",
@@ -166,7 +167,8 @@
     "// Finite-difference stencil\n",
     "double stencil(grid_t u_new, grid_t u_old, long x, long y, parameters p) {\n",
     "   // Update the content\n",
-    "}```\n",
+    "}\n",
+    "```\n",
     "\n",
     "Until now, we've been accessing elements with:\n",
     "\n",