Fix syntax of nEvents

Author: ddobrigk

run/SimExamples/McTracksToAOD/run_Pythia8.sh

@@ -9,7 +9,7 @@ NEVENTS=1000
 # --aggregate-timeframe 10 is used to combine 10 generated events into a timeframe that is then converted to AOD tables
 # note that if you need special configuration for the analysis tasks, it needs to be passed to proxy and converter as well
 
-o2-sim-dpl-eventgen -b --nevents ${NEVENTS} --aggregate-timeframe 10 --generator pythia8pp --confKeyValues "${CONFKEY}" --vertexMode kNoVertex |\
+o2-sim-dpl-eventgen -b --nEvents ${NEVENTS} --aggregate-timeframe 10 --generator pythia8pp --confKeyValues "${CONFKEY}" --vertexMode kNoVertex |\
 o2-sim-mctracks-to-aod -b | o2-analysis-mctracks-to-aod-simple-task -b &> pythia8.log
 
 # the very same analysis task can also directly run on an AO2D with McCollisions and McParticles: