Correct xmldoc spelling error on WorkflowAttribute (#227)

src/Temporalio/Workflows/WorkflowAttribute.cs

@@ -41,7 +41,7 @@ public WorkflowAttribute(string name)
 
         /// <summary>
         /// Gets or sets a value indicating whether the workflow is dynamic. If a workflow is
-        /// dynamic, it cannot by given a name in this attribute and the run method must an array of
+        /// dynamic, it cannot be given a name in this attribute and the run method must an array of
         /// <see cref="Converters.IRawValue" />.
         /// </summary>
         public bool Dynamic { get; set; }