tutorial - fix typo

Author: LLCampos

docs/tutorial.md

@@ -649,7 +649,7 @@ import cats.effect.std.Console
 import cats.syntax.all._
 import collection.immutable.Queue
 
-def consumer[F[_] : Sync: Console](queueR: Ref[F, Queue[Int]]): F[Unit] =
+def consumer[F[_]: Sync: Console](queueR: Ref[F, Queue[Int]]): F[Unit] =
   for {
     iO <- queueR.modify{ queue =>
       queue.dequeueOption.fold((queue, Option.empty[Int])){case (i,queue) => (queue, Option(i))}
@@ -697,7 +697,7 @@ The full implementation of this naive producer consumer is available
 
 Our `run` function instantiates the shared queue wrapped in a `Ref` and boots
 the producer and consumer in parallel. To do to it uses `parMapN`, that creates
-and runs the fibers that will run the `IO`s passed as paremeter. Then it takes
+and runs the fibers that will run the `IO`s passed as parameter. Then it takes
 the output of each fiber and and applies a given function to them. In our case
 both producer and consumer shall run forever until user presses CTRL-C which
 will trigger a cancelation.