message: Fix typo: "seperate" to "separate"
diff: * example, which was "TrebleBoost_wApp".
  *
  * Here in "TrebleBoost_wApp_Alt", we changed none of the signal processing of "TrebleBoost_wApp".
  -* Instead, we just refactored the code to seperate the different pieces of code into different
  -* files so that it is easier to keep the pieces of code seperate. This aids in readability
  -* and encapsulation. By seperating the code into seperate files it makes it possible to create
  +* Instead, we just refactored the code to separate the different pieces of code into different
  +* files so that it is easier to keep the pieces of code separate. This aids in readability
  +* and encapsulation. By separating the code into separate files it makes it possible to create
  * much more complex programs than would be possible with everything lumped together in one file.
  *
  * Like any App-enabled sketch, this example shows you:
  