Update query-processing-architecture-guide.md

Author: pmasl

docs/relational-databases/query-processing-architecture-guide.md

@@ -960,7 +960,7 @@ A query execution plan may contain the **NonParallelPlanReason** attribute in th
 
 After exchange operators are inserted, the result is a parallel-query execution plan. A parallel-query execution plan can use more than one worker thread. A serial execution plan, used by a non-parallel (serial) query, uses only one worker thread for its execution. The actual number of worker threads used by a parallel query is determined at query plan execution initialization and is determined by the complexity of the plan and the degree of parallelism. 
 
-Degree of parallelism (DOP) determines the maximum number of CPUs that are being used; it does not mean the number of worker threads that are being used. The DOP limit is set per [task](../relational-databases/system-dynamic-management-views/sys-dm-os-tasks-transact-sql.md). It is not a per [request](../relational-databases/system-dynamic-management-views/sys-dm-exec-requests-transact-sql.md) or per query limit. This means that during a parallel query execution, a single request can spawn multiple tasks which are assigned to a [scheduler](../relational-databases/system-dynamic-management-views/sys-dm-os-tasks-transact-sql.md). More processors than specififed by the MAXDOP may be used concurrently at any given point of query execution, when different tasks are executed concurrently. For more information, see the [Thread and Task Architecture Guide](../relational-databases/thread-and-task-architecture-guide.md).
+Degree of parallelism (DOP) determines the maximum number of CPUs that are being used; it does not mean the number of worker threads that are being used. The DOP limit is set per [task](../relational-databases/system-dynamic-management-views/sys-dm-os-tasks-transact-sql.md). It is not a per [request](../relational-databases/system-dynamic-management-views/sys-dm-exec-requests-transact-sql.md) or per query limit. This means that during a parallel query execution, a single request can spawn multiple tasks which are assigned to a [scheduler](../relational-databases/system-dynamic-management-views/sys-dm-os-tasks-transact-sql.md). More processors than specified by the MAXDOP may be used concurrently at any given point of query execution, when different tasks are executed concurrently. For more information, see the [Thread and Task Architecture Guide](../relational-databases/thread-and-task-architecture-guide.md).
 
 The [!INCLUDE[ssNoVersion](../includes/ssnoversion-md.md)] Query Optimizer does not use a parallel execution plan for a query if any one of the following conditions is true: