chore: fix experiments table in README.md (#280)

Author: julian-risch

README.md

@@ -47,7 +47,8 @@ that includes it. Once it reaches the end of its lifespan, the experiment will b
 | [`InMemoryChatMessageStore`][6] | Memory Store                              | December 2024     | None         | <a href="https://colab.research.google.com/github/deepset-ai/haystack-cookbook/blob/main/notebooks/conversational_rag_using_memory.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/>      | [Discuss](https://github.com/deepset-ai/haystack-experimental/discussions/75)  |
 | [`ChatMessageRetriever`][7]     | Memory Component                          | December 2024     | None         | <a href="https://colab.research.google.com/github/deepset-ai/haystack-cookbook/blob/main/notebooks/conversational_rag_using_memory.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/>      | [Discuss](https://github.com/deepset-ai/haystack-experimental/discussions/75)  |
 | [`ChatMessageWriter`][8]        | Memory Component                          | December 2024     | None         | <a href="https://colab.research.google.com/github/deepset-ai/haystack-cookbook/blob/main/notebooks/conversational_rag_using_memory.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/>      | [Discuss](https://github.com/deepset-ai/haystack-experimental/discussions/75)  |
-| [`Pipeline`][9]                 | Pipeline breakpoints for debugging        | June 2025         | None         | <a href="https://colab.research.google.com/github/deepset-ai/haystack-cookbook/blob/main/notebooks/hybrid_rag_pipeline_with_breakpoints.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/> | [Discuss]()
+| [`Pipeline`][9]                 | Pipeline breakpoints for debugging        | June 2025         | None         | <a href="https://colab.research.google.com/github/deepset-ai/haystack-cookbook/blob/main/notebooks/hybrid_rag_pipeline_with_breakpoints.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/> | [Discuss]() 
+
 [2]: https://github.com/deepset-ai/haystack-experimental/blob/main/haystack_experimental/core/super_component/super_component.py
 [4]: https://github.com/deepset-ai/haystack-experimental/blob/main/haystack_experimental/components/retrievers/auto_merging_retriever.py
 [5]: https://github.com/deepset-ai/haystack-experimental/blob/main/haystack_experimental/components/splitters/hierarchical_doc_splitter.py