Fix formatting issues in performance profile CSV

Author: StuartWheater

tests/testthat/perf_files/armadillo_azure-pipeline_perf-profile.csv

@@ -2,7 +2,7 @@
 "conndisconn::perf::simple0","0.1581","0.5","2"
 "ds.abs::perf::0","17.27","0.5","2"
 "ds.asCharacter::perf::0","16.84","0.5","2"
-"ds.asDataMatrix::perf:0","17.44","0.5","2"
+"ds.asDataMatrix::perf::0","17.44","0.5","2"
 "ds.asInteger::perf:0","17.61","0.5","2"
 "ds.asList::perf:0","16.46","0.5","2"
 "ds.asLogical::perf::0","17.46","0.5","2"
@@ -14,7 +14,7 @@
 "ds.completeCases::perf::combine:0","17.26","0.5","2"
 "ds.dim::perf::combine:0","23.82","0.5","2"
 "ds.exists::perf::combine:0","24.21","0.5","2"
-"ds.exp::perf::combine:0","17.18","0.5","2"
+"ds.exp::perf::0","7.932","0.5","2"
 "ds.isNA::perf::combine:0","23.86","0.5","2"
 "ds.length::perf::combine:0","24.04","0.5","2"
 "ds.levels::perf::combine:0","23.96","0.5","2"