[content/en] Add contributor experience survey announcement and blog …

…post

content/en/announcements/contribex-survey.md

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+---
+title: Developer Experience Survey
+date: 2025-02-17
+expiryDate: 2025-03-17
+---
+
+<i class="fas fa-bullhorn"></i> Help us [improve the contributor experience] (5-10
+min). Survey closes January 31.
+
+[improve the contributor experience]:
+  https://docs.google.com/forms/d/e/1FAIpQLScoG279ZhRuMu8J_8BebGEVtMOS8BgD9cpQUJ6xSnNIAUtedw/viewform?usp=header

content/en/blog/2025/contribex-survey.md

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+---
+title: The OpenTelemetry Contributor Experience Survey is open!
+linkTitle: ContribEx Survey is open
+date: 2025-02-17
+author: >-
+  [Pablo Baeyens](https://github.com/mx-psi) (Datadog)
+sig: Contributor Experience
+---
+
+Since its founding, OpenTelemetry has had [thousands of contributors][3] from all around the world,
+including end users, vendors and students. [Last summer][1] some members of the OpenTelemetry
+project came together to create [Contributor Experience SIG][2]; a SIG focused on improving the
+experience of contributors to the OpenTelemetry Project, to make sure contributors of all types can
+have a great experience. Since then, the SIG has been working on a number of initiatives, including
+an [Outreachy project][5] to [create up to date contributor documentation][4].
+
+To inform future initiatives and help us understand the current state of the contributor experience,
+we are launching today our first official Contributor Experience Survey. If you have ever
+contributed to the project, be it with code, documentation or in a different way, we want to hear
+from you! The survey should take between five and ten minutes, and is **open from February 17th up
+until March 17th**.
+
+The survey is anonymous; only [maintainers of the Contributor Experience SIG][7] will see your full
+individual answers. We will share an aggregate analysis of the survey results once completed, with a
+special focus to avoid data re-identification.
+
+You can **access the survey [here][6]**. If you have any questions or concerns, please reach out to
+Pablo Baeyens on the CNCF Slack or via the email listed on the first page of the survey.
+
+[1]: https://github.com/open-telemetry/community/pull/2162
+[2]: https://github.com/open-telemetry/sig-contributor-experience
+[3]: https://opentelemetry.devstats.cncf.io/d/9/developer-activity-counts-by-repository-group-table?orgId=1
+[4]: https://github.com/open-telemetry/sig-contributor-experience/issues/16
+[5]: https://www.outreachy.org/
+[6]: https://docs.google.com/forms/d/e/1FAIpQLScoG279ZhRuMu8J_8BebGEVtMOS8BgD9cpQUJ6xSnNIAUtedw/viewform?usp=header
+[7]: https://github.com/orgs/open-telemetry/teams/sig-contributor-experience-maintainers