fix doc (#605)

* fix doc

* update fix

docs/RELEASE.md

@@ -4,6 +4,8 @@
   * Support [Metis tuner](./HowToChooseTuner.md#MetisTuner) as a new NNI tuner. Metis algorithm has been proofed to be well performed for **online** hyper-parameter tuning.
   * Support [ENAS customized tuner](https://github.com/countif/enas_nni), a tuner contributed by github community user, is an algorithm for neural network search, it could learn neural network architecture via reinforcement learning and serve a better performance than NAS.
   * Support [Curve fitting assessor](./HowToChooseTuner.md#Curvefitting) for early stop policy using learning curve extrapolation. 
+  * Advanced Support of [Weight Sharing](./AdvancedNAS.md): Enable weight sharing for NAS tuners, currently through NFS.
+
 
 ### Training Service Ehancement
 * [FrameworkController Training service](./FrameworkControllerMode.md): Support run experiments using frameworkcontroller on kubernetes
@@ -17,10 +19,6 @@
       * Show the link for trial log file on WebUI. 
   * Support to show final result's all key-value pairs.
 
-### Others
-  * [Weight Sharing](./AdvancedNAS.md): Enable weight sharing for NAS algorithms, currently through NFS.
-
-
 # Release 0.4.1 - 12/14/2018
 ## Major Features
 ### New tuner supports