Fix .gitignore

.gitignore

diff --git a/.gitignore b/.gitignore
index da66475..ae858ab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-Cargo.lock
-layout.ld
-platform
-target
+/Cargo.lock
+/layout.ld
+/platform
+/target