Fix config documentation

Change-Id: I4cca42fd9c2951294dee2c83ae4497e6e63ead7e
diff --git a/config.md b/config.md
index 59d4a9c..a284e55 100644
--- a/config.md
+++ b/config.md
@@ -69,6 +69,7 @@
 rules applied to every change pushed, regardless of the folder or target branch.
 
 Example of assigning every configuration files to a specific owner group:
+
 ```yaml
 matchers:
 - suffix: *.config