fix Array to string conversion

mirzaev/vk/chat/system/core.php

@@ -47,7 +47,7 @@ class core
         }
 
         // Запись в реестр
-        $this->patterns .= [$pattern];
+        $this->patterns []= [$pattern];
 
         return $pattern;
     }

mirzaev/vk/chat/system/pattern.php

@@ -39,7 +39,7 @@ class pattern
     public function command(command $command): static
     {
         // Запись в реестр
-        $this->commands .= [$command];
+        $this->commands []= [$command];
 
         return $this;
     }