Merge pull request #4544 from ClickHouse/laeg/include-flink

Update data-ingestion-index.md

Author: Blargian

docs/integrations/data-ingestion/data-ingestion-index.md

@@ -15,6 +15,7 @@ For more information check out the pages below:
 |------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | [Airbyte](/integrations/airbyte)                                 | An open-source data integration platform. It allows the creation of ELT data pipelines and is shipped with more than 140 out-of-the-box connectors.                                                                                   |
 | [Apache Spark](/integrations/apache-spark)                       | A multi-language engine for executing data engineering, data science, and machine learning on single-node machines or clusters                                                                                                        |
+| [Apache Flink](https://github.com/ClickHouse/flink-connector-clickhouse)                       | Real-time data ingestion and processing into ClickHouse through Flink's DataStream API with support for batch writes                                                                                                        |
 | [Amazon Glue](/integrations/glue)                                | A fully managed, serverless data integration service provided by Amazon Web Services (AWS) simplifying the process of discovering, preparing, and transforming data for analytics, machine learning, and application development.     |
 | [Azure Synapse](/integrations/azure-synapse)                     | A fully managed, cloud-based analytics service provided by Microsoft Azure, combining big data and data warehousing to simplify data integration, transformation, and analytics at scale using SQL, Apache Spark, and data pipelines. |
 | [Azure Data Factory](/integrations/azure-data-factory)           | A cloud-based data integration service that enables you to create, schedule, and orchestrate data workflows at scale. |

scripts/aspell-dict-file.txt

@@ -1174,3 +1174,6 @@ pytz
 timedelta
 --docs/integrations/language-clients/python/index.md--
 Polars
+--docs/integrations/data-ingestion/data-ingestion-index.md--
+DataStream
+Flink's