Add example for C2103

[Rageking8]

Added a small example of the error.

[prmerger-automator]

@Rageking8 : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit ad25a41:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/error-messages/compiler-errors-1/compiler-error-c2103.md	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[prmerger-automator]

PRMerger Results

Issue	Description
File Change Percent	This PR contains file(s) with more than 30% file change.

[TylerMSFT]

Thank you. Off to a strong start this week :-)

[TylerMSFT]

#sign-off

[prmerger-automator]

@Rageking8 : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[TylerMSFT]

#hold-off
For some reason this isn't generating the error for me.

[prmerger-automator]

You typed hold-off, but the PR wasn't signed off, so nothing was changed.

[TylerMSFT]

This is a C (not C++) error. I added a note to clarify that.

[learn-build-service-prod]

Learn Build status updates of commit 700a52c:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/error-messages/compiler-errors-1/compiler-error-c2103.md	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[prmerger-automator]

PRMerger Results

Issue	Description
File Change Percent	This PR contains file(s) with more than 30% file change.

[TylerMSFT]

#sign-off