docs: add pkg flags to config file page (#7370)

docs/docs/references/configuration/config-file.md

@@ -431,6 +431,26 @@ module:
   # Same as '--enable-modules'
   enable-modules: []
 
+```
+## Package options
+
+```yaml
+pkg:
+  # Same as '--include-dev-deps'
+  include-dev-deps: false
+
+  # Same as '--pkg-relationships'
+  relationships:
+   - unknown
+   - root
+   - direct
+   - indirect
+
+  # Same as '--pkg-types'
+  types:
+   - os
+   - library
+
 ```
 ## Registry options