=doc fix double 'the' in some docs (#21881)

akka-docs/rst/java/testing.rst

@@ -497,7 +497,7 @@ Create the child using JavaTestKit
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The ``JavaTestKit`` class can in fact create actors that will run with the test probe as parent.
-This will cause any messages the the child actor sends to `context().getParent()` to
+This will cause any messages the child actor sends to `context().getParent()` to
 end up in the test probe.
 
 .. includecode:: code/docs/testkit/ParentChildTest.java#test-TestProbe-parent

akka-docs/rst/scala/testing.rst

@@ -576,7 +576,7 @@ Create the child using TestProbe
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The ``TestProbe`` class can in fact create actors that will run with the test probe as parent.
-This will cause any messages the the child actor sends to `context.parent` to
+This will cause any messages the child actor sends to `context.parent` to
 end up in the test probe.
 
 .. includecode:: code/docs/testkit/ParentChildSpec.scala#test-TestProbe-parent

akka-remote/src/main/java/akka/remote/artery/AeronErrorLog.java

@@ -31,7 +31,7 @@ import java.util.concurrent.atomic.AtomicLong;
 
 /**
  * Application to print out errors recorded in the command-and-control (cnc) file is maintained by media driver in shared
- * memory. This application reads the the cnc file and prints the distinct errors. Layout of the cnc file is described in
+ * memory. This application reads the cnc file and prints the distinct errors. Layout of the cnc file is described in
  * {@link CncFileDescriptor}.
  */
 public class AeronErrorLog

akka-remote/src/test/java/akka/remote/artery/AeronStat.java

@@ -38,7 +38,7 @@ import static io.aeron.driver.status.SystemCounterDescriptor.SYSTEM_COUNTER_TYPE
 
 /**
  * Tool for printing out Aeron counters. A command-and-control (cnc) file is maintained by media driver
- * in shared memory. This application reads the the cnc file and prints the counters. Layout of the cnc file is
+ * in shared memory. This application reads the cnc file and prints the counters. Layout of the cnc file is
  * described in {@link CncFileDescriptor}.
  *
  * This tool accepts filters on the command line, e.g. for connections only see example below:

akka-stream/src/main/scala/akka/stream/javadsl/Flow.scala

@@ -1869,7 +1869,7 @@ final class Flow[-In, +Out, +Mat](delegate: scaladsl.Flow[In, Out, Mat]) extends
     new Flow(delegate.watchTermination()((left, right) ⇒ matF(left, right.toJava)))
 
   /**
-   * Materializes to `FlowMonitor[Out]` that allows monitoring of the the current flow. All events are propagated
+   * Materializes to `FlowMonitor[Out]` that allows monitoring of the current flow. All events are propagated
    * by the monitor unchanged. Note that the monitor inserts a memory barrier every time it processes an
    * event, and may therefor affect performance.
    * The `combine` function is used to combine the `FlowMonitor` with this flow's materialized value.

akka-stream/src/main/scala/akka/stream/javadsl/Source.scala

@@ -2068,7 +2068,7 @@ final class Source[+Out, +Mat](delegate: scaladsl.Source[Out, Mat]) extends Grap
     new Source(delegate.watchTermination()((left, right) ⇒ matF(left, right.toJava)))
 
   /**
-   * Materializes to `FlowMonitor[Out]` that allows monitoring of the the current flow. All events are propagated
+   * Materializes to `FlowMonitor[Out]` that allows monitoring of the current flow. All events are propagated
    * by the monitor unchanged. Note that the monitor inserts a memory barrier every time it processes an
    * event, and may therefor affect performance.
    * The `combine` function is used to combine the `FlowMonitor` with this flow's materialized value.

akka-stream/src/main/scala/akka/stream/scaladsl/Flow.scala

@@ -2192,7 +2192,7 @@ trait FlowOpsMat[+Out, +Mat] extends FlowOps[Out, Mat] {
   def mapMaterializedValue[Mat2](f: Mat ⇒ Mat2): ReprMat[Out, Mat2]
 
   /**
-   * Materializes to `FlowMonitor[Out]` that allows monitoring of the the current flow. All events are propagated
+   * Materializes to `FlowMonitor[Out]` that allows monitoring of the current flow. All events are propagated
    * by the monitor unchanged. Note that the monitor inserts a memory barrier every time it processes an
    * event, and may therefor affect performance.
    * The `combine` function is used to combine the `FlowMonitor` with this flow's materialized value.