Add spotlight openFOAM-addon

Closes #337 (closed)

• Review link

Checklist for authors

• Add a link pointing to the review app

Checklist for reviewers

• Reference the corresponding issue in MR
• File size of images is not too large
• Update date_added attribute
• Centres are referenced by official names
• License is named by SPDX identifier if possible
• All links are pointing to the right place

/cc @frust45 @konrad @jandt-desy @christian.meessen

_spotlights/openfoam.md

@@ -4,7 +4,14 @@ layout: spotlight
 name: HZDR Multiphase Addon for OpenFOAM
 date_added: 2022-07-18
 preview_image: openfoam/openfoam_preview.png
-excerpt: The HZDR Multiphase Addon is a software publication released by Helmholtz-Zentrum Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, Interoperability, and Reuseability). It contains experimental research work for the open-source CFD software OpenFOAM, released by The OpenFOAM Foundation. The developments are dedicated to the numerical simulation of multiphase flows, in particular to the multi-field two-fluid model (Euler-Euler method). 
+excerpt: >
+    The HZDR Multiphase Addon is a software publication released by Helmholtz-Zentrum 
+    Dresden-Rossendorf according to the FAIR principles (Findability, Accessibility, 
+    Interoperability, and Reuseability). It contains experimental research work for
+    the open-source CFD software OpenFOAM, released by The OpenFOAM Foundation. 
+    The developments are dedicated to the numerical simulation of multiphase flows,
+    in particular to the multi-field two-fluid model (Euler-Euler method). 
+    
 title_image: openfoam_title.png
 title: HZDR Multiphase Addon for OpenFOAM
 keywords: 
@@ -80,14 +87,14 @@ industrial needs.
 
 ## Highlights
 
-- [OpenFOAM-Hybrid](https://hzdr.de/openfoam-hybrid): A Morphology Adaptive Two-fluid Model
-- [OpenFOAM_RCS](https://hzdr.de/openfoam-rcs): Sustainable Development of Simulation Software for Modeling of Reactor Coolant Systems
-- Scientific Workflow based on [Snakemake](https://snakemake.readthedocs.io/en/stable/) Workflow Management
+- [OpenFOAM-Hybrid](https://hzdr.de/openfoam-hybrid): A morphology adaptive two-fluid model
+- [OpenFOAM_RCS](https://hzdr.de/openfoam-rcs): Sustainable development of simulation software for modeling of reactor coolant systems
+- Scientific workflow based on [Snakemake](https://snakemake.readthedocs.io/en/stable/) workflow management
 - [more](https://hzdr.de/openfoam)
 
 <center>
 Example of a simulation of a distillation column
-<video src="{{ site.directory.videos | relative_url }}spotlights/openfoam/Simulation-of-a-distillation-column.webm" autoplay controls loop>
+<video src="{{ site.directory.videos | relative_url }}spotlights/openfoam/Simulation-of-a-distillation-column.webm" autoplay controls loop />
 </center>
 
 ## Contributor with an Addon