s/totallyTyped="true"/errorLevel="1" in psalm.xml (deprecated since vimeo/psalm:~4.24 or so)

Signed-off-by: Marco Pivetta <ocramius@gmail.com>

Author: Ocramius

psalm.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <psalm
-        totallyTyped="true"
+        errorLevel="1"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="https://getpsalm.org/schema/config"
         xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"