Small docs update

docs/quickstart.md

@@ -46,6 +46,19 @@ environments/racetrack
 The {ref}`observations <observations>`, {ref}`actions <actions>`, {ref}`dynamics <dynamics>` and {ref}`rewards <rewards>`
 of an environment are parametrized by a configuration, defined as a
 {py:attr}`~highway_env.envs.common.abstract.AbstractEnv.config` dictionary.
+
+For example, the number of lanes can be changed with:
+
+
+```{eval-rst}
+.. jupyter-execute::
+
+  env = gymnasium.make(
+    "highway-v0",
+    config={"lanes_count": 2}
+  )
+```
+
 After environment creation, the configuration can be accessed using the
 {py:attr}`~highway_env.envs.common.abstract.AbstractEnv.config` attribute.
 
@@ -54,32 +67,21 @@ After environment creation, the configuration can be accessed using the
 
   import pprint
 
-  env = gymnasium.make("highway-v0", render_mode='rgb_array')
   pprint.pprint(env.unwrapped.config)
 ```
 
-For example, the number of lanes can be changed with:
+The config can also be changed after creation
+
 
 ```{eval-rst}
 .. jupyter-execute::
-
+  env = gymnasium.make("highway-v0", render_mode='rgb_array')
   env.unwrapped.config["lanes_count"] = 2
   env.reset()
   plt.imshow(env.render())
   plt.show()
 ```
 
-or directly at creation time with:
-
-```{eval-rst}
-.. jupyter-execute::
-
-  env = gymnasium.make(
-    "highway-v0",
-    render_mode='rgb_array',
-    config={"lanes_count": 2}
-  )
-```
 
 ```{note}
 The environment must be {py:meth}`~highway_env.envs.common.abstract.AbstractEnv.reset` for the change of configuration