Fix broken links in resources/index (#325)

* Fix broken linkgs

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Signed-off-by: Mateus Pereira <mateuspereira97@icloud.com>

src/pages/resources/index.mdx

@@ -21,20 +21,18 @@ These resources have been gathered to help new users learn about OpenLineage, or
 ## Conference Talks
 
 * [OpenLineage in Airflow: A Comprehensive Guide](https://www.youtube.com/watch?v=SZBVgREqets) - Maciej Obuchowski @ Airflow Summit (2023)
-* [Cross-platform Data Lineage with OpenLineage](https://www.databricks.com/dataaisummit/session/cross-platform-data-lineage-openlineage/) - Julien Le Dem and Willy Lulciuc @ Data+AI Summit (2023)
+* [Cross-platform Data Lineage with OpenLineage](https://www.youtube.com/watch?v=rO3BPqUtWrI&amp)
 * [Column-level Lineage is Coming to the Rescue](https://youtu.be/xFVSZCCbZlY) - Paweł Leszczyński and Maciej Obuchowski @ Berlin Buzzwords (2023)
 * [Cross-platform Data Lineage with OpenLineage](https://www.youtube.com/watch?v=pLBVGIPuwEo) - Julien Le Dem @ Berlin Buzzwords (2022)
 * [Data Observability and Pipelines: OpenLineage and Marquez](https://mattturck.com/datakin/) - Matt Turck @ Data Driven NYC (2021)
 * [Data Lineage and Observability with Marquez and OpenLineage](https://bigdatatechwarsaw.eu/edition-2021/) - Julien Le Dem @ Big Data Technology Warsaw Summit (2021)
 * [Data Lineage with Apache Airflow using OpenLineage](https://airflowsummit.org/sessions/2021/data-lineage-with-apache-airflow-using-openlineage/) - Julien Le Dem & Willy Lulciuc @ Airflow Summit (2021)
-* [Observability for data pipelines with OpenLineage](https://2021.berlinbuzzwords.de/session/observability-data-pipelines-openlineage) - Julien Le Dem @ Berlin Buzzwords (2021)
+* [Observability for data pipelines with OpenLineage](https://www.youtube.com/watch?v=HEJFCQLwdtk) - Julien Le Dem @ Berlin Buzzwords (2021)
 * [Data Observability and Pipelines: OpenLineage and Marquez](https://www.youtube.com/watch?v=MoW-YGjHLgI) - Julien Le Dem @ Data Driven NYC (2021)
-* [OpenLineage Lightning Talk](https://www.youtube.com/watch?v=anlV5Er_BpM) - Julien Le Dem @ MetaSpeak Metadata Day (2020)
 * [Observability for Data Pipelines: OpenLineage Project Launch](https://www.coss.community/coss/ocs-2020-breakout-julien-le-dem-3eh4) - Julien Le Dem @ Open Core Summit (2020)
 
 ## Blog Posts
 
-* [Introducing OpenLineage](https://datakin.com/introducing-openlineage/) - from Julien Le Dem of Datakin
 * [Exploring Data Lineage with OpenLineage](https://hightouch.io/blog/exploring-data-lineage-with-open-lineage/) - from Pedram Navid of Hightough
 
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