fixed test erro

src/test/build/asciidoctor.rs

@@ -1,4 +1,4 @@
-use crate::app::builder::asciidoctor;
+use crate::app::build::asciidoctor;
 
 #[test]
 fn last_matching_index_0() {

src/test/mod.rs

@@ -1,2 +1,2 @@
 mod fs_util;
-mod builder; 
+mod build;