Fix namespace

Author: fgrosa

Detectors/Upgrades/ITS3/macros/test/CheckClustersITS3.C

@@ -240,7 +240,7 @@ void CheckClustersITS3(const std::string& clusfile = "o2clus_its.root",
         dlty = locH.Y() - y0;
         z0 = locHsta.Z();
         dltz = locH.Z() - z0;
-        r = (its3::constants::pixelarray::pixels::apts::responseYShift - y0) / dlty;
+        r = (o2::its3::constants::pixelarray::pixels::apts::responseYShift - y0) / dlty;
       } else {
         x0 = locHsta.X();
         dltx = locH.X() - x0;

Detectors/Upgrades/ITS3/macros/test/CreateDictionariesITS3.C

@@ -288,7 +288,7 @@ void CreateDictionariesITS3(bool saveDeltas = true,
                   dlty = xyzLocE.Y() - y0;
                   z0 = xyzLocS.Z();
                   dltz = xyzLocE.Z() - z0;
-                  r = (its3::constants::pixelarray::pixels::apts::responseYShift - y0) / dlty;
+                  r = (o2::its3::constants::pixelarray::pixels::apts::responseYShift - y0) / dlty;
                 } else {
                   x0 = xyzLocS.X();
                   dltx = xyzLocE.X() - x0;