Minor change to erro message

core/AssetManager/UIAssetMinifier.php

@@ -60,7 +60,7 @@ class UIAssetMinifier extends Singleton
     private static function validateDependency()
     {
         if (!class_exists("JShrink\\Minifier"))
-            throw new Exception("JShrink could not be found, maybe you are using Piwik from git and need to have update Composer. <br>php composer.phar update");
+            throw new Exception("JShrink could not be found, maybe you are using Piwik from git and need to update Composer. $ php composer.phar update");
     }
 
 }

plugins/API/Menu.php

@@ -39,7 +39,7 @@ class Menu extends \Piwik\Plugin\Menu
         }
 
         if (!class_exists("DeviceDetector\\DeviceDetector")) {
-            throw new \Exception("DeviceDetector could not be found, maybe you are using Piwik from git and need to have update Composer. <br>php composer.phar update");
+            throw new \Exception("DeviceDetector could not be found, maybe you are using Piwik from git and need to update Composer. Execute this command: php composer.phar update");
         }
 
         $ua = new OperatingSystem($_SERVER['HTTP_USER_AGENT']);