Update 'docs/intro.md'

docs/intro.md

@@ -13,7 +13,6 @@ Imagine a vast collection of research products all linked together, contextualis
 
 As of today, the OpenAIRE Research Graph aggregates around 450Mi metadata records with links collecting from 10K data sources trusted by scientists, including:
 
-* Repositories registered in OpenDOAR or re3data.org (soon FAIRSharing.org)
 * Open Access journals registered in DOAJ
 * Crossref
 * Unpaywall
@@ -21,5 +20,14 @@ As of today, the OpenAIRE Research Graph aggregates around 450Mi metadata record
 * Microsoft Academic Graph
 * Datacite
 
+And repositories registered in OpenDOAR, re3data.org, FAIRSharing.org, and the EOSC Service Catalogue. Among these, prominent repositories such as:
+
+* UKPubMed
+* ArXiv
+* HAL
+* Zenodo
+* Figshare
+* Dryad 
+
 After cleaning, deduplication, enrichment and full-text mining processes, the graph is analysed to produce statistics for the [OpenAIRE MONITOR](https://monitor.openaire.eu), the [Open Science Observatory](https://osobservatory.openaire.eu), made discoverable via the [OpenAIRE EXPLORE](https://explore.openaire.eu) and programmatically accessible via [OpenAIRE Public APIs](https://develop.openaire.eu).
 Last but not least, frequently updated [JSON dumps](download) are published on Zenodo.