update changelogs for 1.15 release (#40)

diff --git a/core/dotnet2.2/CHANGELOG.md b/core/dotnet2.2/CHANGELOG.md
index 71ff900..551f4fd 100644
--- a/core/dotnet2.2/CHANGELOG.md
+++ b/core/dotnet2.2/CHANGELOG.md
@@ -20,11 +20,11 @@
 # .NET Core 2.2 OpenWhisk Runtime Container
 
 
-## 1.15 (next release)
+## 1.15
 Changes:
+- Increased MaxRequestBodySize, so larger zip files can be uploaded (#33)
 - Get the latest security fixes (apk upgrade) with every build.
 
-
 ## 1.14
 Changes:
 - Support for async methods. Example:
diff --git a/core/dotnet3.1/CHANGELOG.md b/core/dotnet3.1/CHANGELOG.md
index ed867b6..90c8e54 100644
--- a/core/dotnet3.1/CHANGELOG.md
+++ b/core/dotnet3.1/CHANGELOG.md
@@ -20,11 +20,11 @@
 # .NET Core 3.1 OpenWhisk Runtime Container
 
 
-## 1.15 (next release)
+## 1.15
 Changes:
+- Increased MaxRequestBodySize, so larger zip files can be uploaded (#33)
 - Get the latest security fixes (apk upgrade) with every build.
 
-
 ## 1.14
 Changes:
 - Initial release