From 580d0f0dafc7a55f49274fed345d72e29d5bb8d1 Mon Sep 17 00:00:00 2001
From: Sanders Lin <45224617+SandersLin@users.noreply.github.com>
Date: Fri, 17 Apr 2020 23:46:45 +0800
Subject: [PATCH] Update CONTRIBUTING.md

---
 CONTRIBUTING.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 709a1130e625..dd4295404f78 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -138,7 +138,7 @@ We want your work to be readable by others; therefore, we encourage you to note
   The use of [Python type hints](https://docs.python.org/3/library/typing.html) is encouraged for function parameters and return values.  Our automated testing will run [mypy](http://mypy-lang.org) so run that locally before making your submission.
 
   ```python
-  def sum_ab(a: int, b: int) --> int:
+  def sum_ab(a: int, b: int) -> int:
       return a + b
   ```