Fix name of TZD branch in TaskMakeRecoEvents class

Branched out from !1009 (merged) to refocus it.

Bug introduced in !1019 (merged)
Without the fix the Tof (mCBM) reconstruction fails with a segmentation due to a missmatch beween the T0 info from the event and the available date

Putting Dominik as reviewer as we did the changes creating the bug, but maybe @v.friese should have a look instead

reco/tasks/CbmTaskMakeRecoEvents.cxx

@@ -151,7 +151,7 @@ InitStatus CbmTaskMakeRecoEvents::Init()
 
     // --- T0 digis
     fT0Digis = new std::vector<CbmTzdDigi>;
-    frm->RegisterAny("T0Digi", fT0Digis, kFALSE);
+    frm->RegisterAny("TzdDigi", fT0Digis, kFALSE);
 
     // --- STS digis
     fStsDigis = new std::vector<CbmStsDigi>;