Fix Typo: "agnle" -> "angle" (flet-dev#1816)

* Simplify chained comparison

* typo: "agnle" -> "angle"

sdk/python/packages/flet-core/src/flet_core/audio.py

@@ -187,7 +187,7 @@ def volume(self) -> OptionalNumber:
 
     @volume.setter
     def volume(self, value: OptionalNumber):
-        if value is None or (value >= 0 and value <= 1):
+        if value is None or (0 <= value <= 1):
             self._set_attr("volume", value)
 
     # balance
@@ -197,7 +197,7 @@ def balance(self) -> OptionalNumber:
 
     @balance.setter
     def balance(self, value: OptionalNumber):
-        if value is None or (value >= -1 and value <= 1):
+        if value is None or (-1 <= value <= 1):
             self._set_attr("balance", value)
 
     # playback_rate
@@ -207,7 +207,7 @@ def playback_rate(self) -> OptionalNumber:
 
     @playback_rate.setter
     def playback_rate(self, value: OptionalNumber):
-        if value is None or (value >= 0 and value <= 2):
+        if value is None or (0 <= value <= 2):
             self._set_attr("playbackRate", value)
 
     # release_mode

sdk/python/packages/flet-core/src/flet_core/canvas/arc.py

@@ -12,7 +12,7 @@ def __init__(
         y: OptionalNumber = None,
         width: OptionalNumber = None,
         height: OptionalNumber = None,
-        start_agnle: OptionalNumber = None,
+        start_angle: OptionalNumber = None,
         sweep_angle: OptionalNumber = None,
         use_center: Optional[bool] = None,
         paint: Optional[Paint] = None,
@@ -28,7 +28,7 @@ def __init__(
         self.y = y
         self.width = width
         self.height = height
-        self.start_angle = start_agnle
+        self.start_angle = start_angle
         self.sweep_angle = sweep_angle
         self.use_center = use_center
         self.paint = paint