fix spelling

tests/test_merge_tacs.py

@@ -39,7 +39,7 @@ def test_collect_and_merge_tsvs():
         merged_tsvs = collect_and_merge_tsvs(bids_dir=tempdir)
         merged_tsvs = {tsv: pandas.read_csv(tsv, sep="\t") for tsv in merged_tsvs}
 
-        # check that the merged tsvs are the concatentation of the unmerged tac tsvs same as the unmerged run tsvs
+        # check that the merged tsvs are the concatenation of the unmerged tac tsvs same as the unmerged run tsvs
         tacs = [unmerged_run_tsvs[tsv] for tsv in unmerged_run_tsvs if "tacs" in tsv]
 
         # add up lengths of split tacs