[math] add vector of vector of floats dict as with double

see https://root-forum.cern.ch/t/vector-of-vectors-in-ttree-vs-rntuple/64416/2

Author: ferdymercury

math/mathcore/inc/LinkDef2.h

@@ -174,6 +174,7 @@
 #pragma link C++ class ROOT::Math::DistSamplerOptions+;
 #pragma link C++ class ROOT::Math::GoFTest+;
 #pragma link C++ class std::vector<std::vector<double> >+;
+#pragma link C++ class std::vector<std::vector<float> >+;
 
 #pragma link C++ class ROOT::Math::Delaunay2D+;