Fix typo

[gurustron]

Summary

Fixed typo "They" -> "The"

change was done in the online github editor which also reported the following:

We’ve detected the file has mixed line endings. When you commit changes we will normalize them to Windows-style (CRLF).

[learn-build-service-prod]

Learn Build status updates of commit 47c7213:

✅ Validation status: passed

File	Status	Preview URL	Details
xml/Microsoft.Extensions.DependencyInjection/HttpClientFactoryServiceCollectionExtensions.xml	✅Succeeded	View

For more details, please refer to the build report.

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[BillWagner]

Adding @gewarren

WHen I hide whitespace, this is fine. I'm not sure how you want to handle the mixed line endings for this file going forward.