Fix spelling error in sync* phony target

Change-Id: I3c28194d87f458df90809b3b6dfc8db095862598
diff --git a/filesystem/android_device_product_out.go b/filesystem/android_device_product_out.go
index 405d710..1175c42 100644
--- a/filesystem/android_device_product_out.go
+++ b/filesystem/android_device_product_out.go
@@ -51,7 +51,7 @@
 		if partition == "system_ext" {
 			partition = "systemext"
 		}
-		partition = partition + "imgage"
+		partition = partition + "image"
 		ctx.Phony(info.ModuleName, imgInstallPath)
 		ctx.Phony(partition, imgInstallPath)
 		for _, fip := range info.FullInstallPaths {