Update build badge url

Author: kattni

README.rst

@@ -9,8 +9,8 @@ Introduction
     :target: https://discord.gg/nBQh6qu
     :alt: Discord
 
-.. image:: https://travis-ci.com/adafruit/Adafruit_CircuitPython_SHARPMemoryDisplay.svg?branch=master
-    :target: https://travis-ci.com/adafruit/Adafruit_CircuitPython_SHARPMemoryDisplay
+.. image:: https://travis-ci.com/adafruit/Adafruit_CircuitPython_SharpMemoryDisplay.svg?branch=master
+    :target: https://travis-ci.com/adafruit/Adafruit_CircuitPython_SharpMemoryDisplay
     :alt: Build Status
 
 A display control library for Sharp 'memory' displays