minor corrections

src/Bundle/ChillPersonBundle/Entity/Person.php

@@ -284,10 +284,12 @@ class Person implements HasCenterInterface
      *
      * @uses AccompanyingPeriod::addPerson
      */
-    public function addAccompanyingPeriod(AccompanyingPeriod $accompanyingPeriod) : void
+    public function addAccompanyingPeriod(AccompanyingPeriod $accompanyingPeriod): self
     {
         $accompanyingPeriod->addPerson($this);
         $this->accompanyingPeriods->add($accompanyingPeriod);
+        
+        return $this;
     }
     
     /**

src/Bundle/ChillPersonBundle/Resources/views/AccompanyingPeriod/list.html.twig

@@ -5,6 +5,9 @@
 {% block title %}{{ 'Person accompanying period - %name%'|trans({ '%name%' : person.__toString}) }}{% endblock title %}
 
 {% block personcontent %}
+
+<h1>{{ 'Accompanying period list'|trans }}</h1>
+
 <table class="rounded">
     <thead>
         <tr>

src/Bundle/ChillPersonBundle/migrations/Version20210329144338.php

@@ -16,7 +16,7 @@ final class Version20210329144338 extends AbstractMigration
 {
     public function getDescription() : string
     {
-        return 'Complete accompanying period table';
+        return 'Complete AccompanyingPeriod table';
     }
 
     public function up(Schema $schema) : void