[Internal] Performance Test: Fixes Typo in Perf test Benchmark file (#…

…4910)

## Description

Fixes typo in benchmark file of perf test

## Type of change

- [X] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] This change requires a documentation update

## Closing issues

To automatically close an issue: closes #IssueNumber

Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Performance.Tests/Contracts/BenchmarkResults.json

@@ -36,7 +36,7 @@
   "MockedItemBenchmark.ReadFeed;[Type=OfTWithClientMetricsEnabled]": "536267.5",
   "MockedItemBenchmark.ReadFeed;[Type=OfTWithDiagnosticsToString]": "557967.75",
   "MockedItemBenchmark.ReadFeed;[Type=OfTWithDistributedTracingEnabled]": "536887.5",
-  "MockedItemBenchmark.ReadFeed;[Type=Stream]": "35859 (4.88%)",
+  "MockedItemBenchmark.ReadFeed;[Type=Stream]": "35859",
   "MockedItemBenchmark.ReadItemExists;[Type=OfT]": "34509.75",
   "MockedItemBenchmark.ReadItemExists;[Type=OfTCustom]": "34516",
   "MockedItemBenchmark.ReadItemExists;[Type=OfTWithClientMetricsEnabled]": "35012.75",