[Keyboard] Minor typo and broken link fix (#14847)

keyboards/ploopyco/mouse/readme.md

@@ -1,6 +1,6 @@
 # Ploopyco Mouse
 
-![Ploopyco Mouse](https://www.ploopy.co/uploads/1/2/7/6/127652558/s905404500980887952_p10_i19_w1414.jpeg)
+![Ploopyco Mouse](https://ploopy.co/wp-content/uploads/2021/06/g1.jpeg)
 
 It's a DIY, QMK Powered Mouse!!!!
 
@@ -17,7 +17,7 @@ To jump to the bootloader, hold down "Button 4" (the "forward" button on the lef
 
 See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
 
-# Customzing your PloopyCo Mouse
+# Customizing your PloopyCo Mouse
 
 While the defaults are designed so that it can be plugged in and used right away, there are a number of things that you may want to change.  Such as adding DPI control, or to use the ball to scroll while holding a button.   To allow for this sort of control, there is a callback for both the scroll wheel and the mouse sensor.