update doc name

ckkuang · ckkuang · commit d46c46e9d55a · 2020-09-28T10:14:43.000-07:00
diff --git a/rfcs/20200928-sharded-variable.md b/rfcs/20200928-sharded-variable.md
@@ -4,7 +4,7 @@
 :-------------- |:---------------------------------------------------- |
 | **Author(s)** | Chenkai Kuang (chenkai@google.com)                   |
 | **Sponsor**   | Priya Gupta (priyag@google.com)                      |
-| **Updated**   | 2020-09-25                                           |
+| **Updated**   | 2020-09-28                                           |
 
 
 # Motivation
