IDLE: changelog correction and addition (GH-15042)

diff --git a/Misc/NEWS.d/3.8.0a3.rst b/Misc/NEWS.d/3.8.0a3.rst
index fc37b22..66308c6 100644
--- a/Misc/NEWS.d/3.8.0a3.rst
+++ b/Misc/NEWS.d/3.8.0a3.rst
@@ -830,7 +830,8 @@
 .. nonce: WbaRJW
 .. section: IDLE
 
-Increase test coverage of idlelib.autocomplete by 30%.
+Increase test coverage of idlelib.autocomplete by 30%. Patch by Louie
+Lu
 
 ..
 
diff --git a/Misc/NEWS.d/3.8.0b1.rst b/Misc/NEWS.d/3.8.0b1.rst
index 3cebcfb..609aa33 100644
--- a/Misc/NEWS.d/3.8.0b1.rst
+++ b/Misc/NEWS.d/3.8.0b1.rst
@@ -1951,7 +1951,7 @@
 
 ..
 
-.. bpo: 13102
+.. bpo: 36807
 .. date: 2019-05-05-16-27-53
 .. nonce: AGNWYJ
 .. section: IDLE