MNT: apply ruff 0.16 formatting to README.md code blocks

CI now installs ruff 0.16.0 (unpinned), which formats Python code inside
Markdown fenced blocks. README.md predates this and fails `ruff format
--check .`, blocking the lint job on every open PR. Reformat it here (4-space
indent, double quotes, no logic change) so this PR's lint is green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: Gui-FernandesBR

README.md

@@ -170,10 +170,10 @@ env = Environment(
 tomorrow = datetime.date.today() + datetime.timedelta(days=1)
 
 env.set_date(
-  (tomorrow.year, tomorrow.month, tomorrow.day, 12), timezone="America/Denver"
-) # Tomorrow's date in year, month, day, hour UTC format
+    (tomorrow.year, tomorrow.month, tomorrow.day, 12), timezone="America/Denver"
+)  # Tomorrow's date in year, month, day, hour UTC format
 
-env.set_atmospheric_model(type='Forecast', file='GFS')
+env.set_atmospheric_model(type="Forecast", file="GFS")
 ```
 
 This can be followed up by starting a Solid Motor object. To get help on it, just use:
@@ -233,9 +233,7 @@ buttons = calisto.set_rail_buttons(
 
 calisto.add_motor(Pro75M1670, position=-1.255)
 
-nose = calisto.add_nose(
-    length=0.55829, kind="vonKarman", position=1.278
-)
+nose = calisto.add_nose(length=0.55829, kind="vonKarman", position=1.278)
 
 fins = calisto.add_trapezoidal_fins(
     n=4,
@@ -290,7 +288,7 @@ To actually create a Flight object, use:
 
 ```python
 test_flight = Flight(
-  rocket=calisto, environment=env, rail_length=5.2, inclination=85, heading=0
+    rocket=calisto, environment=env, rail_length=5.2, inclination=85, heading=0
 )
 ```