Updated doc-string, ran black

Author: kmatch98

examples/display_button_customfont.py

@@ -1,5 +1,8 @@
 # SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 # SPDX-License-Identifier: MIT
+"""
+Button example with a custom font.
+"""
 
 import os
 import board

examples/display_button_simpletest.py

@@ -1,5 +1,8 @@
 # SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 # SPDX-License-Identifier: MIT
+"""
+Simple button example.
+"""
 
 import board
 import displayio
@@ -57,6 +60,6 @@
         if button.contains(p):
             button.selected = True
         else:
-            button.selected = False # if touch is dragged outside of button
+            button.selected = False  # if touch is dragged outside of button
     else:
-        button.selected = False # if touch is released
+        button.selected = False  # if touch is released

examples/display_button_soundboard.py

@@ -1,5 +1,8 @@
 # SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 # SPDX-License-Identifier: MIT
+"""
+Soundboard example with buttons.
+"""
 
 import time
 from adafruit_pyportal import PyPortal