Fix the title of 1.4.0 release notes

sigmavirus24 · sigmavirus24 · commit 26c89ee9d0e6 · 2020-04-08T06:25:43.000-05:00
diff --git a/docs/source/release-notes/1.4.0.rst b/docs/source/release-notes/1.4.0.rst
@@ -1,4 +1,4 @@
-1.3.0 -- 2020-04-07
+1.4.0 -- 2020-04-07
 -------------------
 
 Security
