fix some typos in method names and php docs

Author: salehhashemi1992

tests/AggregateRoots/CommandHandlerTest.php

@@ -102,7 +102,7 @@ class CartClearedForCommand extends ShouldBeStored
 
     assertCount(1, CartForCommand::retrieve($this->UUID)->cartItems->items);
 
-    // Assert that commands are dispatched to the AR iteself
+    // Assert that commands are dispatched to the AR itself
     $bus->dispatch(new ClearCart(
         $this->UUID,
     ));

tests/TestClasses/Projectors/ProjectorWithoutHandlesEvents.php

@@ -14,7 +14,7 @@ public function functionThatHandlesMoneyAdd(MoneyAddedEvent $event)
         $event->account->addMoney($event->amount);
     }
 
-    public function anotherFunctionThatHandlesMoneySubstracted(MoneySubtractedEvent $event)
+    public function anotherFunctionThatHandlesMoneySubtracted(MoneySubtractedEvent $event)
     {
         $event->account->subtractMoney($event->amount);
     }
@@ -23,7 +23,7 @@ public function functionWithoutTypeHint($parameter)
     {
     }
 
-    public function functionWithUnreleatedClassTypeHint(Collection $test)
+    public function functionWithUnrelatedClassTypeHint(Collection $test)
     {
     }