Update publication DOIs

docs/publications.md

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 Below you can find a list of publications that are directly related to Theodolite:
 
 * S. Henning and W. Hasselbring. “[A Configurable Method for Benchmarking Scalability of Cloud-Native Applications](https://doi.org/10.1007/s10664-022-10162-1)”. In: *Empirical Software Engineering* 27. 2022. DOI: [10.1007/s10664-022-10162-1](https://doi.org/10.1007/s10664-022-10162-1).
-* T. Pfandzelter, S. Henning, T. Schirmer, W. Hasselbring, and D. Bermbach. “[Streaming vs. Functions: A Cost Perspective on Cloud Event Processing](https://arxiv.org/pdf/2204.11509.pdf)”. In: *IEEE International Conference on Cloud Engineering*. 2022. In press.
-* S. Henning and W. Hasselbring. “Demo Paper: Benchmarking Scalability of Cloud-Native Applications with Theodolite”. In: *IEEE International Conference on Cloud Engineering*. 2022. In press.
+* T. Pfandzelter, S. Henning, T. Schirmer, W. Hasselbring, and D. Bermbach. “[Streaming vs. Functions: A Cost Perspective on Cloud Event Processing](https://arxiv.org/pdf/2204.11509.pdf)”. In: *IEEE International Conference on Cloud Engineering*. 2022. DOI: [10.1109/IC2E55432.2022.00015](https://doi.org/10.1109/IC2E55432.2022.00015).
+* S. Henning and W. Hasselbring. “Demo Paper: Benchmarking Scalability of Cloud-Native Applications with Theodolite”. In: *IEEE International Conference on Cloud Engineering*. 2022. DOI: [10.1109/IC2E55432.2022.00037](https://doi.org/10.1109/IC2E55432.2022.00037).
 * S. Henning, B. Wetzel, and W. Hasselbring. “[Reproducible Benchmarking of Cloud-Native Applications With the Kubernetes Operator Pattern](http://ceur-ws.org/Vol-3043/short5.pdf)”. In: *Symposium on Software Performance*. 2021.
 * S. Henning and W. Hasselbring. “[How to Measure Scalability of Distributed Stream Processing Engines?](https://research.spec.org/icpe_proceedings/2021/companion/p85.pdf)” In: *Companion of the ACM/SPEC International Conference on Performance Engineering*. 2021. DOI: [10.1145/3447545.3451190](https://doi.org/10.1145/3447545.3451190).
 * S. Henning and W. Hasselbring. “[Theodolite: Scalability Benchmarking of Distributed Stream Processing Engines in Microservice Architectures](https://arxiv.org/abs/2009.00304)”. In: *Big Data Research* 25. 2021. DOI: [10.1016/j.bdr.2021.100209](https://doi.org/10.1016/j.bdr.2021.100209).