Merge branch 'treeNodeRename' into 'preview'

Renamed a tree node to Big Data Frameworks

See merge request !429

doc.zih.tu-dresden.de/docs/software/big_data_frameworks.md

-# Big Data Frameworks
+# Big Data Analytics
 
 [Apache Spark](https://spark.apache.org/), [Apache Flink](https://flink.apache.org/)
 and [Apache Hadoop](https://hadoop.apache.org/) are frameworks for processing and integrating