Remove space before period in v1_102.md (#8612)

Author: JohnVeness

release-notes/v1_102.md

@@ -369,7 +369,7 @@ We’ve fine-tuned the accessibility signal to indicate when chat requires user
 
 ### Alert when rendering errors occur in chat
 
-Previously, screen reader users were not alerted when a chat rendering error occurred . Users are now alerted with this information and can also focus it via keyboard.
+Previously, screen reader users were not alerted when a chat rendering error occurred. Users are now alerted with this information and can also focus it via keyboard.
 
 ## Code Editing