Update src/clock.jl

Co-authored-by: Fredrik Bagge Carlson <baggepinnen@gmail.com>

Author: AayushSabharwal

src/clock.jl

@@ -79,8 +79,8 @@ end
     $(TYPEDEF)
 
 A struct representing the operation of indexing a clock to obtain a subset of the time
-points at which it ticked. The actual list of time points depends on the time interval
-for which the clock was running, and can be obtained via `canonicalize_indexed_clock`
+points at which it ticked. The actual list of time points depends on the tick instances 
+on which the clock was ticking, and can be obtained via `canonicalize_indexed_clock`
 by providing a timeseries solution object.
 
 For example, `IndexedClock(PeriodicClock(0.1), 3)` refers to the third time that