Merge pull request #261 from DoubleML/jh-funding

Funding statement updated

Author: SvenKlaassen

doc/index.rst

@@ -263,7 +263,7 @@ Acknowledgements
 ----------------
 
 Funding by the Deutsche Forschungsgemeinschaft (DFG, German Research
-Foundation) is acknowledged – Project Number 431701914.
+Foundation) is acknowledged – Project Number 431701914 and Grant GRK 2805/1.
 
 References
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