diff --git a/doc/stdlib/parallel.rst b/doc/stdlib/parallel.rst
index 771fb4852701d..5bcec5626808c 100644
--- a/doc/stdlib/parallel.rst
+++ b/doc/stdlib/parallel.rst
@@ -358,7 +358,7 @@ Cluster Manager Interface
     ``params`` is a dictionary of all keyword arguments ``addprocs`` was called with.
 
 .. function:: manage(manager::FooManager, pid::Int, config::WorkerConfig. op::Symbol)
-    
+
     Implemented by cluster managers. It is called on the master process, during a worker's lifetime,
     with appropriate ``op`` values:
 
@@ -370,7 +370,7 @@ Cluster Manager Interface
       - with ``:finalize`` for cleanup purposes.
 
 .. function:: kill(manager::FooManager, pid::Int, config::WorkerConfig)
-    
+
     Implemented by cluster managers. It is called on the master process, by ``rmprocs``. It should cause the remote worker specified
     by ``pid`` to exit. ``Base.kill(manager::ClusterManager.....)`` executes a remote ``exit()`` on ``pid``
 
@@ -390,7 +390,7 @@ Cluster Manager Interface
 
 
 .. function:: Base.process_messages(instrm::AsyncStream, outstrm::AsyncStream)
-    
+
     Called by cluster managers using custom transports. It should be called when the custom transport implementation receives the
     first message from a remote worker. The custom transport must manage a logical connection to the remote worker and provide two
     AsyncStream objects, one for incoming messages and the other for messages addressed to the remote worker.