chore: fix indentation in psalm.xml

Co-authored-by: Ferdinand Thiessen <opensource@fthiessen.de>
Signed-off-by: Côme Chilliet <91878298+come-nc@users.noreply.github.com>

psalm.xml

@@ -5,7 +5,7 @@
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xmlns="https://getpsalm.org/schema/config"
 	xsi:schemaLocation="https://getpsalm.org/schema/config"
-    errorBaseline="build/psalm-baseline.xml"
+	errorBaseline="build/psalm-baseline.xml"
 	findUnusedBaselineEntry="false"
 	findUnusedCode="false"
 	phpVersion="8.0"