grammar fix

Author: amirchev7

library.properties

@@ -3,7 +3,7 @@ version=1.0.0
 author=Aleksandr N. Mirchev <aleksandrmirchev@gmail.com>
 maintainer=Aleksandr N. Mirchev <aleksandrmirchev@gmail.com>
 sentence=A library for creating timed events/actions.
-paragraph=This library allows you to time events. The timers can be started, stopped, or paused as needed. The interval between actions can be stay constant or be changed as needed.
+paragraph=This library allows you to time events. The timers can be started, stopped, or paused as needed. The interval between actions can stay constant or be changed as needed.
 category=Scheduling
 url=https://github.com/amirchev/VariableTimedAction/
 architectures=avr