Fix typos, via a Levenshtein-style corrector

akka-distributed-data/src/main/scala/akka/cluster/ddata/protobuf/ReplicatedDataSerializer.scala

@@ -569,7 +569,7 @@ class ReplicatedDataSerializer(val system: ExtendedActorSystem)
           else if (entry.getOperation == rd.ORSetDeltaOp.Full)
             ORSet.FullStateDeltaOp(orsetFromProto(entry.getUnderlying))
           else
-            throw new NotSerializableException(s"Unknow ORSet delta operation ${entry.getOperation}")
+            throw new NotSerializableException(s"Unknown ORSet delta operation ${entry.getOperation}")
         }
         .to(immutable.Vector)
     ORSet.DeltaGroup(ops)

akka-distributed-data/src/multi-jvm/scala/akka/cluster/ddata/JepsenInspiredInsertSpec.scala

@@ -253,7 +253,7 @@ class JepsenInspiredInsertSpec
         failureWriteAcks should be(Nil)
       }
       runOn(n2, n3) {
-        // without delays all could teoretically have been written before the blackhole
+        // without delays all could theoretically have been written before the blackhole
         if (delayMillis != 0)
           failureWriteAcks should not be (Nil)
       }

akka-distributed-data/src/test/scala/akka/cluster/ddata/protobuf/ReplicatedDataSerializerSpec.scala

@@ -58,7 +58,7 @@ class ReplicatedDataSerializerSpec
 
   /**
    * Given a blob created with the previous serializer (with only string keys for maps). If we deserialize it and then
-   * serialize it again and arive at the same BLOB we can assume that we are compatible in both directions.
+   * serialize it again and arrive at the same BLOB we can assume that we are compatible in both directions.
    */
   def checkCompatibility(oldBlobAsBase64: String, obj: AnyRef): Unit = {
     val oldBlob = Base64.getDecoder.decode(oldBlobAsBase64)