Typo: Add a missing "of"

ClientLibrary/Quickstarts/netcore/ShowWorkItemConsole/Program.cs

@@ -20,7 +20,7 @@ static void Main(string[] args)
                 // Create a connection
                 VssConnection connection = new VssConnection(orgUrl, new VssBasicCredential(string.Empty, personalAccessToken));
 
-                // Show details a work item
+                // Show details of a work item
                 ShowWorkItemDetails(connection, workItemId).Wait();
             }
             else
@@ -56,4 +56,4 @@ static private async Task ShowWorkItemDetails(VssConnection connection, int work
             }
         }
     }
-}
+}