[lesson3_answers] Fix title typo from L2 to L3.

Murilo M. Marinho · Murilo M. Marinho · commit f6c8ca44feed · 2026-02-03T16:45:50.000Z
diff --git a/basic_lessons/lesson3_exercise_answers.ipynb b/basic_lessons/lesson3_exercise_answers.ipynb
@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# L2 Exercise Answers\n",
+    "# L3 Exercise Answers\n",
     "\n",
     "*License: CC-BY-NC-SA 4.0*\n",
     "\n",
