Update package image url

Author: kutoga

source/FluentArgs/FluentArgs.csproj.paket.template

@@ -4,7 +4,7 @@ title FluentArgs
 authors Benjamin Bruno Meier
 projectUrl https://github.com/kutoga/FluentArgs
 licenseUrl https://github.com/kutoga/FluentArgs/blob/master/LICENSE
-iconUrl https://raw.githubusercontent.com/kutoga/FluentArgs/master/doc/misc/logo_small.png
+iconUrl https://raw.githubusercontent.com/kutoga/FluentArgs/master/doc/misc/logo.png
 tags fluent cli argument parser argparse fluentargs commandline parameter commandlineparser
 description Fluent command line argument parsing library with a focus on a very simple API