update comments

src/Microsoft.TestPlatform.CrossPlatEngine/DataCollection/DataCollectionResult.cs

@@ -23,7 +23,7 @@ public DataCollectionResult(Collection<AttachmentSet> attachments, Collection<In
         public Collection<AttachmentSet> Attachments { get; }
 
         /// <summary>
-        /// Get list of attachments processors
+        /// Get the list of the invoked data collectors.
         /// </summary>
         public Collection<InvokedDataCollector> InvokedDataCollectors { get; }
     }

src/Microsoft.TestPlatform.ObjectModel/Client/Events/TestRunCompleteEventArgs.cs

@@ -31,7 +31,7 @@ public TestRunCompleteEventArgs(ITestRunStatistics stats, bool isCanceled, bool
             this.IsAborted = isAborted;
             this.Error = error;
             this.AttachmentSets = attachmentSets ?? new Collection<AttachmentSet>(); // Ensuring attachmentSets are not null, so that new attachmentSets can be combined whenever required.
-            this.InvokedDataCollectors = invokedDataCollectors ?? new Collection<InvokedDataCollector>(); // Ensuring run data collectors are not null.
+            this.InvokedDataCollectors = invokedDataCollectors ?? new Collection<InvokedDataCollector>(); // Ensuring that invoked data collectors are not null.
             this.ElapsedTimeInRunningTests = elapsedTime;
         }
 

src/Microsoft.TestPlatform.ObjectModel/Client/Payloads/TestRunAttachmentsProcessingPayload.cs

@@ -18,7 +18,7 @@ public class TestRunAttachmentsProcessingPayload
         public IEnumerable<AttachmentSet> Attachments { get; set; }
 
         /// <summary>
-        /// Collection of data collectors.
+        /// Collection of the invoked data collectors.
         /// </summary>
         [DataMember]
         public IEnumerable<InvokedDataCollector> InvokedDataCollectors { get; set; }