fix syntax

payloads/examples/Button/Button-example6.txt

@@ -1 +1,23 @@
-BUTTON_DEF
  REM This is the first button definition
  STRINGLN The button was pressed once!
  BUTTON_DEF
    REM This second button definition 
    REM overwrites the first
    STRINGLN The button was pressed twice!
  END_BUTTON
END_BUTTON

STRING Press the button twice to see
STRING how nested button definitions work!
ENTER

WHILE TRUE
  STRING .
  DELAY 1000
END WHILE


REM If the button is pressed once at any point in the payload it will stop typing “.” and the first button definition will be executed.
REM When the first button definition is executed, a secondary button definition will be implemented.
REM If the button pressed a second time, the newly implement second button definition will execute.
+BUTTON_DEF
+  REM This is the first button definition
+  STRINGLN The button was pressed once!
+  BUTTON_DEF
+    REM This second button definition 
+    REM overwrites the first
+    STRINGLN The button was pressed twice!
+  END_BUTTON
+END_BUTTON
+
+STRING Press the button twice to see
+STRING how nested button definitions work!
+ENTER
+
+WHILE TRUE
+  STRING .
+  DELAY 1000
+END_WHILE
+
+
+REM If the button is pressed once at any point in the payload it will stop typing “.” and the first button definition will be executed.
+REM When the first button definition is executed, a secondary button definition will be implemented.
+REM If the button pressed a second time, the newly implement second button definition will execute.