renamed files

app/src/main/res/layout/activity_main.xml

@@ -20,6 +20,6 @@
         android:layout_height="match_parent"
         android:layout_gravity="start"
         android:fitsSystemWindows="true"
-        app:headerLayout="@layout/nav_header_main"
-        app:menu="@menu/activity_main_drawer" />
+        app:headerLayout="@layout/burger_header"
+        app:menu="@menu/burger" />
 </androidx.drawerlayout.widget.DrawerLayout>

app/src/main/res/layout/content_main.xml

@@ -16,5 +16,5 @@
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:navGraph="@navigation/mobile_navigation" />
+        app:navGraph="@navigation/app_navigation" />
 </androidx.constraintlayout.widget.ConstraintLayout>