[NDGL-16] docs: detekt-config.yml 패키지 네이밍 패턴 수정

Author: mj010504

detekt-config.yml

@@ -85,4 +85,4 @@ naming:
     VariableNaming:
         active: false
     PackageNaming:
-        packagePattern: '[a-z]+(\._?[_?A-Za-z0-9]*)*'
+        packagePattern: '[a-z]+(\._?[_A-Za-z0-9]*)*'