docs changes (#3137) (#354)

Signed-off-by: Modular Magician <magic-modules@google.com>

docs/resources/google_compute_autoscaler.md

@@ -51,7 +51,7 @@ Properties that can be accessed from the `google_compute_autoscaler` resource:
 
       * `utilization_target`: The target CPU utilization that the autoscaler should maintain. Must be a float value in the range (0, 1]. If not specified, the default is 0.6.  If the CPU level is below the target utilization, the autoscaler scales down the number of instances until it reaches the minimum number of instances you specified or until the average CPU of your instances reaches the target utilization.  If the average CPU is above the target utilization, the autoscaler scales up until it reaches the maximum number of instances you specified or until the average utilization reaches the target utilization.
 
-    * `custom_metric_utilizations`: Defines the CPU utilization policy that allows the autoscaler to scale based on the average CPU utilization of a managed instance group.
+    * `custom_metric_utilizations`: Configuration parameters of autoscaling based on a custom metric.
 
       * `metric`: The identifier (type) of the Stackdriver Monitoring metric. The metric cannot have negative values.  The metric must have a value type of INT64 or DOUBLE.