use license string provided by github in citation

AhmetNSimsek · AhmetNSimsek · commit e3e068c18a4d · 2024-02-20T14:24:58.000+01:00
diff --git a/.github/workflows/validate-citation.yml b/.github/workflows/validate-citation.yml
@@ -6,7 +6,7 @@ on:
     - 'CITATION.cff'
 
 jobs:
-  check_maps_precompmesh:
+  validate_citation:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
diff --git a/CITATION.cff b/CITATION.cff
@@ -11,7 +11,7 @@ abstract: |
 
 message: "If you use this software, please cite it as below."
 
-license: Apache License, Version 2.0
+license: Apache-2.0
 
 repository-code: https://github.com/FZJ-INM1-BDA/siibra-python
 
