Merge branch 'doc-update-webide-interactive-terminal-version' into 'master'

Update web ide interactive terminal Gitlab version

See merge request gitlab-org/gitlab-ee!8816

doc/user/project/web_ide/index.md

@@ -130,7 +130,7 @@ IDE. An example `package.json` is below.
 
 ## Interactive Web Terminals for the Web IDE **[ULTIMATE ONLY]**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/5426) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 10.6.
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/5426) in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.6.
 
 CAUTION: **Warning:**
 Interactive Web Terminals for the Web IDE is currently in **Beta**.