fix Full-Def-Example

```
References to undefined settings:

  pricing/*:libraryDependencies from pricing/*:libraryDependencies (/Users/kenji/sbt-full-def-sample/project/build.scala:118)

  common/*:libraryDependencies from common/*:libraryDependencies (/Users/kenji/sbt-full-def-sample/project/build.scala:105)

  server/*:libraryDependencies from server/*:libraryDependencies (/Users/kenji/sbt-full-def-sample/project/build.scala:112)

	at sbt.Init$class.Uninitialized(Settings.scala:260)
	at sbt.Def$.Uninitialized(Def.scala:10)
	at sbt.Init$class.delegate(Settings.scala:184)
	at sbt.Def$.delegate(Def.scala:10)
	at sbt.Init$class.compiled(Settings.scala:135)
	at sbt.Def$.compiled(Def.scala:10)
	at sbt.Init$class.make(Settings.scala:141)
	at sbt.Def$.make(Def.scala:10)
	at sbt.Load$.apply(Load.scala:142)
	at sbt.Load$.defaultLoad(Load.scala:40)
	at sbt.BuiltinCommands$.doLoadProject(Main.scala:458)
	at sbt.BuiltinCommands$$anonfun$loadProjectImpl$2.apply(Main.scala:452)
	at sbt.BuiltinCommands$$anonfun$loadProjectImpl$2.apply(Main.scala:452)
	at sbt.Command$$anonfun$applyEffect$1$$anonfun$apply$2.apply(Command.scala:60)
	at sbt.Command$$anonfun$applyEffect$1$$anonfun$apply$2.apply(Command.scala:60)
	at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:62)
	at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:62)
	at sbt.Command$.process(Command.scala:95)
	at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:100)
	at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:100)
	at sbt.State$$anon$1.process(State.scala:179)
	at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:100)
	at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:100)
	at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
	at sbt.MainLoop$.next(MainLoop.scala:100)
	at sbt.MainLoop$.run(MainLoop.scala:93)
	at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:71)
	at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:66)
	at sbt.Using.apply(Using.scala:25)
	at sbt.MainLoop$.runWithNewLog(MainLoop.scala:66)
	at sbt.MainLoop$.runAndClearLast(MainLoop.scala:49)
	at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:33)
	at sbt.MainLoop$.runLogged(MainLoop.scala:25)
	at sbt.StandardMain$.runManaged(Main.scala:57)
	at sbt.xMain.run(Main.scala:29)
	at xsbt.boot.Launch$$anonfun$run$1.apply(Launch.scala:109)
	at xsbt.boot.Launch$.withContextLoader(Launch.scala:129)
	at xsbt.boot.Launch$.run(Launch.scala:109)
	at xsbt.boot.Launch$$anonfun$apply$1.apply(Launch.scala:36)
	at xsbt.boot.Launch$.launch(Launch.scala:117)
	at xsbt.boot.Launch$.apply(Launch.scala:19)
	at xsbt.boot.Boot$.runImpl(Boot.scala:44)
	at xsbt.boot.Boot$.main(Boot.scala:20)
	at xsbt.boot.Boot.main(Boot.scala)
[error] References to undefined settings:
```