fix table rendering in exercise solutions (#78)

Author: rasbt

ch03/01_main-chapter-code/ch03_exercise-solutions.ipynb

@@ -409,15 +409,15 @@
    "id": "ba80c4c4-9fb4-476c-9711-9bcc922755ac",
    "metadata": {},
    "source": [
-    "| Mode      | Device | Average length | MATH-500 size \n",
-    "|-----------|--------|----------------| ------------\n",
-    "| Base      | CPU    | 97.3           | 10\n",
-    "| Base      | MPS    | 98             | 10\n",
-    "| Reasoning | CPU    | 891.80         | 10\n",
-    "| Reasoning | MPS    | 1159.30        | 10\n",
-    "|           |        |                | \n",
-    "| Base      | CUDA   | 96.74          | 500\n",
-    "| Reasoning | CUDA   | 1361.21        | 500"
+    "| Mode      | Device  | Average length | MATH-500 size  |\n",
+    "|-----------|---------|----------------|----------------|\n",
+    "| Base      | CPU     | 97.3           | 10             |\n",
+    "| Base      | MPS     | 98.0           | 10             |\n",
+    "| Reasoning | CPU     | 891.80         | 10             |\n",
+    "| Reasoning | MPS     | 1159.30        | 10             |\n",
+    "|           |         |                |                |\n",
+    "| Base      | CUDA    | 96.74          | 500            |\n",
+    "| Reasoning | CUDA    | 1361.21        | 500            |\n"
    ]
   },
   {
@@ -461,19 +461,19 @@
    "id": "74f49767-da9b-4832-a6aa-983746671b9c",
    "metadata": {},
    "source": [
-    "| Mode      | Device | Accuracy | MATH-500 size \n",
-    "|-----------|--------|----------| ------------\n",
-    "| Base      | CUDA   | 30.0%    | 10\n",
-    "| Base      | CUDA   | 34.0%    | 50\n",
-    "| Base      | CUDA   | 27.0%    | 100\n",
-    "| Base      | CUDA   | 31.0%    | 200\n",
-    "| Base      | CUDA   | 15.3%    | 500\n",
-    "|           |        |          | \n",
-    "| Reasoning | CUDA   | 90.0%    | 10\n",
-    "| Reasoning | CUDA   | 58.0%    | 50  \n",
-    "| Reasoning | CUDA   | 58.0%    | 100  \n",
-    "| Reasoning | CUDA   | 56.0%    | 200  \n",
-    "| Reasoning | CUDA   | 50.8%    | 500"
+    "| Mode      | Device  | Accuracy | MATH-500 size  |\n",
+    "|-----------|---------|----------|----------------|\n",
+    "| Base      | CUDA    | 30.0%    | 10             |\n",
+    "| Base      | CUDA    | 34.0%    | 50             |\n",
+    "| Base      | CUDA    | 27.0%    | 100            |\n",
+    "| Base      | CUDA    | 31.0%    | 200            |\n",
+    "| Base      | CUDA    | 15.3%    | 500            |\n",
+    "|           |         |          |                |\n",
+    "| Reasoning | CUDA    | 90.0%    | 10             |\n",
+    "| Reasoning | CUDA    | 58.0%    | 50             |\n",
+    "| Reasoning | CUDA    | 58.0%    | 100            |\n",
+    "| Reasoning | CUDA    | 56.0%    | 200            |\n",
+    "| Reasoning | CUDA    | 50.8%    | 500            |\n"
    ]
   },
   {