Update TextChatService.yaml

[sammygrey]

Fixed an inconsistency with TextChatService:CanUserChatAsync().

Changes

TextChatService:CanUserChatAsync() can be used within local scripts, but only with the userId of the local player. Attempting to use this method with another player's userId (in the server or not) will result in this error:

Credit to @xyrafrost for the original bug report regarding this inconsistency.

Checks

By submitting your pull request for review, you agree to the following:

• This contribution was created in whole or in part by me, and I have the right to submit it under the terms of this repository's open source licenses.
• I understand and agree that this contribution and a record of it are public, maintained indefinitely, and may be redistributed under the terms of this repository's open source licenses.
• To the best of my knowledge, all proposed changes are accurate.