docs: update citation data (#728)

Author: swouf

CITATION.cff

@@ -41,6 +41,6 @@ keywords:
   - blended
   - hybrid
 license: AGPL-3.0-only
-commit: 
+commit: 57591f51415f6e12efb4fe9f9566d7a1d4316285
 version: 3.4.0
 date-released: '2024-06-05'

README.md

@@ -24,7 +24,7 @@ The **Collaborative Ideation** app in Graasp was made to organize blended and on
 
 If you use this software or take inspiration from it, please, cite it as below:
 
-> La Scala, J. (2025). Collaborative Ideation (v3.4.0). Zenodo. 
+> La Scala, J. (2025). Collaborative Ideation (v3.4.0). Zenodo. https://doi.org/10.5281/zenodo.15601591
 
 For citing the latest version, use the permanent DOI: [10.5281/zenodo.13862314](https://doi.org/10.5281/zenodo.13862314)