Update descriptions for RDM tools in documentation

Author: DukmakD

topics/rdm_tools.qmd

@@ -23,9 +23,9 @@ There are several tools available to support researchers in performing computati
 
 - [Research Cloud](https://rdm.vu.nl/tools/researchcloud/index.html) is a SURF-hosted portal that allows you to easily build or reuse a virtual research environment. It enables you to run one or more servers with applications that are accessible over the internet. 
 
-- [SciCloud](https://rdm.vu.nl/tools/scicloud/index.html) 
+- [SciCloud](https://rdm.vu.nl/tools/scicloud/index.html) is based on the open-source middleware OpenNebula (ONE) and allows researchers to purchase server capacity to support their research applications.
 
-- [Snellius](https://rdm.vu.nl/tools/snellius/index.html)
+- [Snellius](https://rdm.vu.nl/tools/snellius/index.html) is a SURF-hosted service designed for large-scale experiments, such as simulations and modelling, that require significant computing power.
 
 - [VU Compute hub](https://rdm.vu.nl/tools/vucomputehub/index.html)