[PWGCF] Modified the MC reconstructed task (#17613)

Author: SwatiSaha-1997

PWGCF/EbyEFluctuations/Tasks/CMakeLists.txt

@@ -10,7 +10,7 @@
 # or submit itself to any jurisdiction.
 
 o2physics_add_dpl_workflow(meanpt-fluctuations
-                    SOURCES MeanptFluctuations.cxx
+                    SOURCES meanptFluctuations.cxx
                     PUBLIC_LINK_LIBRARIES O2::Framework O2Physics::AnalysisCore O2Physics::PWGCFCore
                     COMPONENT_NAME Analysis)