fix parsed php problems

public_html/deployment/plugins/rollout/ssh/rollout_ssh.php

@@ -12,18 +12,19 @@ class rollout_ssh extends rollout_base {
 
     /**
      * check requirements if the plugin could work
+     * @return array
      */
-    public function checkRequirements() {
-        // no specific checks needed ... always true
-        return true;
+    public function checkRequirements(): array {
+        // no specific checks needed ... always empty
+        return [];
     }
 
     /**
      * check access to a deploy target
      */
     public function checkConnectionToTarget() {
-        // do nothing ... always true
-        return true;
+        // do nothing ... always empty
+        return [];
     }
 
     /**