fix doc

AtsushiSakai · AtsushiSakai · commit 10042893d30f · 2019-01-13T10:37:06.000+09:00
diff --git a/PathPlanning/RRTstar/rrt_star.ipynb b/PathPlanning/RRTstar/rrt_star.ipynb
@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Simulation"
+    "#### Simulation"
    ]
   },
   {
diff --git a/docs/modules/rrt_star.rst b/docs/modules/rrt_star.rst
@@ -1,6 +1,6 @@
 
 Simulation
-~~~~~~~~~~
+^^^^^^^^^^
 
 .. code-block:: ipython3
 
