添加scala和spark技能树

README.md

@@ -30,6 +30,8 @@
 |9|[Neo4j技能树编辑仓库](https://gitcode.net/csdn/skill_tree_neo4j)|[Neo4j技能树社区](https://bbs.csdn.net/skill/neo4j)|✓|
 |10|[云原生入门技能树](https://gitcode.net/csdn/skill_tree_cloud_native)|[云原生入门技能树](https://bbs.csdn.net/skill/cloud_native)|✓|
 |11|[网络技能树](https://gitcode.net/csdn/skill_tree_network)|[网络技能树社区](https://bbs.csdn.net/skill/network) | ✓初阶已上线 |
+|21|[Scala技能树](https://gitcode.net/csdn/skill_tree_scala)| | |
+|22|[Spark技能树](https://gitcode.net/csdn/skill_tree_spark)| | |
 |12|[CUDA入门技能树](https://gitcode.net/csdn/skill_tree_cuda)| |.|
 |13|[Vue技能树](https://gitcode.net/csdn/skill_tree_vue)| |.|
 |14|[.NET技能树](https://gitcode.net/csdn/skill_tree_dotnet)| | . |