updated the text for about section

| # | Type | Location in page | Description |
|---|---|---|---|
| 1 | Added | Between all sections | Horizontal dividers for visual section separation |
| 2 | Edited | Citation section | "still pending" → "in preparation" |
| 3 | Added | Citation section | Zenodo DOI badge |
| 4 | Added | Contact and Contributions | Sentence linking to NFDI4Cat community channels |
| 5 | Edited | Funding table | Column alignment normalised |

Author: khatamirad

docs/about.md

@@ -2,32 +2,45 @@
 
 Robust data-sharing guidelines are essential in catalysis research to ensure high-quality metadata, reproducibility, and the sustained progress of digital catalysis. CoreMeta4Cat — an initiative under [NFDI4Cat](https://nfdi4cat.org) — specifies the minimum information that must be reported alongside catalysis research data, going beyond conventional field-independent metadata. The guideline helps researchers handle and standardise data across this versatile research field in accordance with the [FAIR principles](https://www.go-fair.org/fair-principles/) (Findable, Accessible, Interoperable, Reusable). Integration of CoreMeta4Cat into data repositories ensures the availability of high-quality metadata and facilitates efficient access to and querying of published datasets.
 
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 ## Terminology and Vocabulary
 
 The terminology employed in CoreMeta4Cat is based on [Voc4Cat](https://nfdi4cat.github.io/voc4cat/), a controlled vocabulary developed under NFDI4Cat that supports standardised semantic representation and advances ontology development in catalysis. Terms not yet covered by Voc4Cat are provisionally defined within the model and incorporated as the vocabulary is updated. CoreMeta4Cat is built on top of [DCAT-AP+](https://nfdi-de.github.io/dcat-ap-plus/) and its chemistry extension [ChemDCAT-AP](https://nfdi-de.github.io/chem-dcat-ap/), enabling interoperability with broader research data infrastructures.
 
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 ## Citation
 
 If you use CoreMeta4Cat in your research, please cite:
 
-> *CoreMeta4Cat: Minimum Information Guidelines for Catalysis Research Data.* NFDI4Cat. [https://nfdi4cat.github.io/CoreMeta4Cat/](https://nfdi4cat.github.io/CoreMeta4Cat/)
+> *CoreMeta4Cat: Minimum Information Guidelines for Catalysis Research Data.* NFDI4Cat. <https://nfdi4cat.github.io/CoreMeta4Cat/>
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+A journal publication is in preparation.
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+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.20564227.svg)](https://doi.org/10.5281/zenodo.20564227)
 
-A journal publication is still pending.
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 ## Acknowledgements
 
 CoreMeta4Cat builds on the provenance and metadata infrastructure established by [DCAT-AP+](https://nfdi-de.github.io/dcat-ap-plus/) and [ChemDCAT-AP](https://nfdi-de.github.io/chem-dcat-ap/). These schemas provide the foundational data model — including the activity, entity, and attribute patterns — on which the CatCore application profile is defined. We gratefully acknowledge the work of the DCAT-AP+ and ChemDCAT-AP development teams.
 
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 ## Funding
 
 CoreMeta4Cat is funded by the German Research Foundation (DFG) and the German Federal Ministry of Education and Research (BMBF) as part of the National Research Data Infrastructure (NFDI):
 
 | Project | Funder | Grant | Link |
 |---|---|---|---|
 | **NFDI4Cat** — NFDI for Catalysis-Related Sciences | DFG | [441926934](https://gepris.dfg.de/gepris/projekt/441926934) | [nfdi4cat.org](https://nfdi4cat.org/) |
-| **CarboDiol** — Carbohydrates to α-ω-Diols 2.0| BMBF | [03XP0612B](https://materialneutral.info/project/carbo-diol2-0/) | — |
+| **CarboDiol** — Carbohydrates to α-ω-Diols 2.0 | BMBF | [03XP0612B](https://materialneutral.info/project/carbo-diol2-0/) | — |
+
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 ## Contact and Contributions
 
 CoreMeta4Cat is developed openly on [GitHub](https://github.com/nfdi4cat/CoreMeta4Cat). Contributions, issue reports, and suggestions are welcome via the repository's issue tracker.
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+For questions about the standard or its adoption, open an issue on GitHub or reach out via the [NFDI4Cat community channels](https://nfdi4cat.org/en/contact/).