Add RHEL release information to Go version output

Resolves: RHEL-19493

golang.spec

@@ -99,7 +99,7 @@
 
 Name:           golang
 Version:        %{version}
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        The Go Programming Language
 # source tree includes several copies of Mark.Twain-Tom.Sawyer.txt under Public Domain
 License:        BSD and Public Domain
@@ -265,6 +265,8 @@ popd
 
 %autopatch -p1
 
+sed -i '1s/$/ (%{?rhel:Red Hat} %{version}-%{release})/' VERSION
+
 cp %{SOURCE2} ./src/runtime/
 
 %build
@@ -526,6 +528,9 @@ cd ..
 %files -n go-toolset
 
 %changelog
+* Thu Nov 30 2023 Alejandro Sáez <asm@redhat.com> - 1.21.4-2
+- Add release information
+
 * Tue Nov 14 2023 Alejandro Sáez <asm@redhat.com> - 1.21.4-1
 - Rebase to Go 1.21.4
 - Resolves: RHEL-11871