Update proxy doc

Updates proxy doc to match that of doc proposed in #300, #298

Author: dfeinzimer

Documentation/UtilityNetworkTrace/README.md

@@ -24,7 +24,7 @@ A named trace configuration defined for a utility network in a webmap comprises
     ///   - map: The map containing the utility network(s).
     ///   - mapPoint: Acts as the point at which newly selected starting point graphics will be created.
     ///   - screenPoint: Acts as the point of identification for items tapped in the utility network.
-    ///   - mapViewProxy: Provides access to the map view's identification and animation functionality.
+    ///   - mapViewProxy: The proxy to provide access to map view operations.
     ///   - viewpoint: Allows the utility network trace tool to update the parent map view's viewpoint.
     ///   - startingPoints: An optional list of programmatically provided starting points.
     public init(

Sources/ArcGISToolkit/Components/UtilityNetworkTrace/UtilityNetworkTrace.swift

@@ -80,7 +80,7 @@ public struct UtilityNetworkTrace: View {
     /// The graphics overlay to hold generated starting point and trace graphics.
     @Binding private var graphicsOverlay: GraphicsOverlay
 
-    /// Provides a method of layer identification when starting points are being chosen.
+    /// The proxy to provide access to map view operations.
     @Binding private var mapViewProxy: MapViewProxy?
 
     /// Acts as the point of identification for items tapped in the utility network.
@@ -545,7 +545,7 @@ public struct UtilityNetworkTrace: View {
     ///   - map: The map containing the utility network(s).
     ///   - mapPoint: Acts as the point at which newly selected starting point graphics will be created.
     ///   - screenPoint: Acts as the point of identification for items tapped in the utility network.
-    ///   - mapViewProxy: Provides access to the map view's identification and animation functionality.
+    ///   - mapViewProxy: The proxy to provide access to map view operations.
     ///   - viewpoint: Allows the utility network trace tool to update the parent map view's viewpoint.
     ///   - startingPoints: An optional list of programmatically provided starting points.
     public init(