Fix typos in super image errors

Bug: 390239238
Test: Presubmits
Change-Id: I8cbc6cb651f7452bf679c045e8b3fc6162205761
diff --git a/filesystem/super_image.go b/filesystem/super_image.go
index f73f0dc..4419a2f 100644
--- a/filesystem/super_image.go
+++ b/filesystem/super_image.go
@@ -232,7 +232,7 @@
 
 	} else {
 		if s.properties.Virtual_ab.Retrofit != nil {
-			ctx.PropertyErrorf("virtual_ab.retrofix", "This property cannot be set when virtual_ab is disabled")
+			ctx.PropertyErrorf("virtual_ab.retrofit", "This property cannot be set when virtual_ab is disabled")
 		}
 		if s.properties.Virtual_ab.Compression != nil {
 			ctx.PropertyErrorf("virtual_ab.compression", "This property cannot be set when virtual_ab is disabled")