Merge pull request #3756 from DataDog/ivoanjo/minimalistic-upgrade-me…

…ssage

Use minimalistic post-install upgrade message

ddtrace.gemspec

@@ -77,12 +77,7 @@ Gem::Specification.new do |spec|
   spec.extensions = ['ext/datadog_profiling_native_extension/extconf.rb', 'ext/datadog_profiling_loader/extconf.rb']
 
   spec.post_install_message = <<-MSG
-    Thank you for installing ddtrace. We have released our next major version!
-
-    As of version 2, `ddtrace` gem has been renamed to `datadog`.
-    The 1.x series will now only receive maintenance updates for security and critical bug fixes.
-
-    To upgrade, please replace gem `ddtrace` with gem `datadog`.
-    For detailed instructions on migration, see: https://dtdg.co/ruby-v2-upgrade
+    The ddtrace gem has been renamed to datadog in version 2. Upgrading is easy: https://dtdg.co/ruby-v2-upgrade
+    ddtrace 1.x will only receive security updates and critical bug fixes.
   MSG
 end