examples: Update expected output

Author: FabioLuporini

examples/performance/00_overview.ipynb

@@ -563,7 +563,7 @@
      "text": [
       "--- \n",
       "+++ \n",
-      "@@ -42,7 +42,8 @@\n",
+      "@@ -43,7 +43,8 @@\n",
       "         {\n",
       "           for (int z = z_m; z <= z_M; z += 1)\n",
       "           {\n",
@@ -600,7 +600,7 @@
      "text": [
       "--- \n",
       "+++ \n",
-      "@@ -43,7 +43,7 @@\n",
+      "@@ -44,7 +44,7 @@\n",
       "           for (int z = z_m; z <= z_M; z += 1)\n",
       "           {\n",
       "             float r0 = 1.0F/h_y;\n",
@@ -636,7 +636,7 @@
      "text": [
       "--- \n",
       "+++ \n",
-      "@@ -43,7 +43,7 @@\n",
+      "@@ -44,7 +44,7 @@\n",
       "           for (int z = z_m; z <= z_M; z += 1)\n",
       "           {\n",
       "             float r0 = 1.0F/h_y;\n",