Fix typo in TrackMonitor.cpp that breaks LHCbPR dashboard entries

Fixing closet -> closest and putting chi2_per_ndof monitor back in.

Tr/TrackMonitors/src/TrackMonitor.cpp

@@ -123,7 +123,7 @@ private:
 
     TypeTrackHistogram( const TrackMonitor* owner, std::string const& type )
         : probChi2{owner, type + "/probChi2", "probChi2", {50, 0, 1}}
-        , chi2PerDoF{owner, type + "/ndof", "chi2/ndof", {50, 0, 100}}
+        , chi2PerDoF{owner, type + "/chi2_per_ndof", "chi2/ndof", {50, 0, 100}}
         , ghostProbability{owner, type + "/ghostProb", "ghostProb", {50, 0, 1.0}}
         , nLHCbIDs{owner, type + "/nLHCBIDs", "#nLHCbIDs", {61, -0.5, 60.5}}
         , pseudoRapidity{owner, type + "/eta", "eta", {50, 0.95, 6.05}}
@@ -139,7 +139,7 @@ private:
         , firststateTX{owner, type + "/tx_firststate", "tx of first state", {50, -1.0, 1.0}}
         , firststateTY{owner, type + "/ty_firststate", "ty of first state", {50, -1.0, 1.0}}
         , firststateQoverP{owner, type + "/qop_firststate", "q/p of first state", {50, -0.001, 0.001}}
-        , Z{owner, type + "/z_closet_tozaxis", "z closest to z-axis", {50, -2000, 2000}}
+        , Z{owner, type + "/z_closest_tozaxis", "z closest to z-axis", {50, -2000, 2000}}
         , P{owner, type + "/p", "momentum", {100, 0, 10}}
         , PT{owner, type + "/pt", "pt", {100, 0, 10}}
         , nIter{owner, type + "/numiter", "number of fit iterations", {11, -0.5, 10.5}}