Update release notes

Author: rosolko

WebDriverManager/WebDriverManager.csproj

@@ -13,7 +13,7 @@
         <RepositoryUrl>https://github.com/rosolko/WebDriverManager.Net</RepositoryUrl>
         <RepositoryType>git</RepositoryType>
         <PackageTags>Selenium WebDriver ChromeDriver EdgeDriver InternetExplorerDriver MarionetteDriver OperaDriver PhantomJsDriver</PackageTags>
-        <PackageReleaseNotes>Update IE version. Add cross platform chrome matching support</PackageReleaseNotes>
+        <PackageReleaseNotes>Add support for .Net 4.6 and Standard 2.1. Support thread and process concurrency </PackageReleaseNotes>
     </PropertyGroup>
 
     <ItemGroup>