Clarify the exceptions are going to be rendered just after

Author: sroze

Console/Application.php

@@ -190,7 +190,7 @@ private function renderRegistrationErrors(InputInterface $input, OutputInterface
             $output = $output->getErrorOutput();
         }
 
-        (new SymfonyStyle($input, $output))->warning('Some commands could not be registered.');
+        (new SymfonyStyle($input, $output))->warning('Some commands could not be registered:');
 
         foreach ($this->registrationErrors as $error) {
             $this->doRenderException($error, $output);

Tests/Console/ApplicationTest.php

@@ -160,7 +160,7 @@ public function testRunOnlyWarnsOnUnregistrableCommand()
         $output = $tester->getDisplay();
 
         $this->assertSame(0, $tester->getStatusCode());
-        $this->assertContains('Some commands could not be registered.', $output);
+        $this->assertContains('Some commands could not be registered:', $output);
         $this->assertContains('throwing', $output);
         $this->assertContains('fine', $output);
     }