remove Argonne grant #4

doc/markdown/index_documentation.md

@@ -66,9 +66,8 @@ Here you can find our publications and the list of talks given on behalf of the
 
 # Acknowledgments {#mainpage_acknow}
 
-The work on %PARTONS has been supported by the following grants: 
-* French National Research Agency, Commissariat l’Energie Atomique et aux Energies Alternatives, grant no. 12-MONU-0008-01;
-* U.S. Department of Energy, Office of Science, Office of Nuclear Physics, contract no. DE-AC02-06CH11357.
+The work on %PARTONS has been supported by the following grant: 
+* French National Research Agency, Commissariat l’Energie Atomique et aux Energies Alternatives, grant no. 12-MONU-0008-01.
 
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