Removed duplicate words

[alfredmyers]

Going after some low hanging fruits while exercising .NET Core tooling on Visual Studio 15.3

[msftclas]

@alfredmyers,
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[saldana]

✅ Validation status: passed

File	Status	Preview URL	Details
docs/profiling/collecting-application-statistics-for-aspnet-web-applications-using-the-profiler-sampling-method-from-the-command-line.md	✅Succeeded
docs/profiling/collecting-performance-statistics-by-using-sampling.md	✅Succeeded
docs/profiling/custom-native-etw-heap-events.md	✅Succeeded
docs/profiling/how-to-attach-the-profiler-to-a-dotnet-service-to-collect-application-statistics-by-using-the-command-line.md	✅Succeeded
docs/profiling/how-to-attach-the-profiler-to-a-dotnet-service-to-collect-memory-data-by-using-the-command-line.md	✅Succeeded
docs/profiling/how-to-attach-the-profiler-to-a-native-service-to-collect-application-statistics-by-using-the-command-line.md	✅Succeeded
docs/profiling/how-to-create-a-profiler-comparison-report-from-a-command-prompt.md	✅Succeeded
docs/profiling/how-to-instrument-a-dotnet-framework-service-and-collect-memory-data-by-using-the-profiler-command-line.md	✅Succeeded
docs/profiling/how-to-instrument-a-dotnet-service-and-collect-detailed-timing-data-by-using-the-profiler-command-line.md	✅Succeeded
docs/profiling/how-to-instrument-a-dynamically-compiled-aspnet-web-application-and-collect-memory-data-by-using-the-profiler-command-line.md	✅Succeeded
docs/profiling/how-to-instrument-a-native-service-and-collect-detailed-timing-data-by-using-the-profiler-command-line.md	✅Succeeded
docs/profiling/how-to-instrument-a-statically-compiled-aspnet-web-application-and-collect-memory-data-by-using-the-profiler-command-line.md	✅Succeeded
docs/profiling/rapid-web-site-profiling-with-vsperfaspnetcmd.md	✅Succeeded
docs/profiling/user-vsperfcmd.md	✅Succeeded
docs/profiling/utilization-navigator.md	✅Succeeded
docs/profiling/vsperf.md	✅Succeeded

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