Update adafruit_circuitplayground/circuit_playground_base.py

Co-authored-by: Dan Halbert <halbert@halwitz.org>

Author: tekktrik

adafruit_circuitplayground/circuit_playground_base.py

@@ -523,7 +523,7 @@ def adjust_touch_threshold(self, adjustment: int) -> None:
 
     @property
     def touch_pins(self) -> List[Pin]:
-        """Return a list of all the pins that are set up as touchpad inputs"""
+        """A list of all the pins that are set up as touchpad inputs"""
         return list(self._touches.keys())
 
     @property