fix example code

Author: ladyada

examples/pyportal.py

@@ -6,7 +6,7 @@
 import displayio
 
 from adafruit_bitmap_font import bitmap_font
-from adafruit_display_text.text_area import TextArea
+from adafruit_display_text.label import Label
 
 backlight = pulseio.PWMOut(microcontroller.pin.PB21) #pylint: disable=no-member
 
@@ -31,7 +31,7 @@
 for demo_text in demos:
     for font in fonts:
         print("Font load {}".format(font.name))
-        area = TextArea(font, text=demo_text)
+        area = Label(font, text=demo_text)
         area.y = y
         splash.append(area)
 

examples/textarea_boundingbox.py

@@ -1,7 +1,7 @@
 import os
 import board
 import displayio
-from adafruit_display_text.text_area import TextArea
+from adafruit_display_text.label import Label
 from adafruit_bitmap_font import bitmap_font
 
 # the current working directory (where this file is)
@@ -37,7 +37,7 @@
 
 print(DISPLAY_STRING)
 
-text = TextArea(font, text=DISPLAY_STRING)
+text = Label(font, text=DISPLAY_STRING)
 text.x = 20
 text.y = 100
 text.color = 0x0