Fix trackParticleMerger property spelling

Sagar Addepallirequested to merge
sagara17/athena:FixTrackParticleMerger into master

During a previous MR (!55361 (merged)), we had accidentally changed the property CreateViewColllection to createViewColllection (the upper case to lower case c). Fixing it now so that LLP1 stops breaking.

Edited by Sagar Addepalli

Merge request reports