Update website/docs/docs/build/metrics-overview.md

Co-authored-by: Matt Shaver <[email protected]>

website/docs/docs/build/metrics-overview.md

@@ -72,7 +72,7 @@ metrics:
 
 ### Cumulative metrics 
 
-[Cumulative metrics](/docs/build/cumulative) aggregate a measure over a given window. If no window is specified, the window will accumulate the measure overall time. **Note**, you will need to create the [time spine model](/docs/build/metricflow-time-spine) before you add cumulative metrics.
+[Cumulative metrics](/docs/build/cumulative) aggregate a measure over a given window. If no window is specified, the window will accumulate the measure over all of the recorded time period. Note that you will need to create the [time spine model](/docs/build/metricflow-time-spine) before you add cumulative metrics.
 
 ```yaml
 # Cumulative metrics aggregate a measure over a given window. The window is considered infinite if no window parameter is passed (accumulate the measure over all of time)