TrfTestsART: Fix typo in path of RDO input file

Merged Johannes Elmsheuser requested to merge elmsheus/athena:trftestsart_20230524 into master

Fix typo in path of RDO input file in test_trf_RUN4_r2a_ca_mt_mu200_overlay.sh test of TrfTestsART package

Tagging @tstreble and @tadej for info.

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