diff --git a/foomo/docs/backend/go-by-example/_category_.json b/foomo/docs/backend/go-by-example/_category_.json
new file mode 100644
index 0000000..5565b8b
--- /dev/null
+++ b/foomo/docs/backend/go-by-example/_category_.json
@@ -0,0 +1,3 @@
+{
+  "label": "Go by example"
+}
diff --git a/foomo/docs/backend/go-by-example/ranging.mdx b/foomo/docs/backend/go-by-example/ranging.mdx
index afb6781..eb189a1 100644
--- a/foomo/docs/backend/go-by-example/ranging.mdx
+++ b/foomo/docs/backend/go-by-example/ranging.mdx
@@ -1,4 +1,5 @@
 import { GoPlayground } from '../../../src/components/GoPlayground';
+
 # ranging and looping
 
 <GoPlayground