Activities are now available in text channels (#7119)

Activities are now usable in text channels, and there was a typo (interace).

Author: lulu5239

docs/activities/Design_Patterns.mdx

@@ -111,9 +111,7 @@ Discord is a social platform where users talk to each other. Sharing and invites
 ![Shared Moment from Chess in the Park](activities/chess-victory.png)
 
 #### Activities in Text Channels
-> preview
-> Activities support in text channels is expected later in 2024.
-- The Activity user interace, copy and user flows should not rely on people in voice to explain, organize, clarify, or instruct about how the activity works. 
+- The Activity user interface, copy and user flows should not rely on people in voice to explain, organize, clarify, or instruct about how the activity works. 
 - All controls, CTAs, and instructions should be clear enough that folks (especially first time users) playing in a text channel are able to quickly start using the app without needing to talk on voice to learn about it.
 - Lean on dynamic first-time user experience and "How To Play" instructions, toast messages, Call To Action buttons, etc. but be careful to not over-clutter with copy.
 
@@ -221,4 +219,4 @@ Developing for the iframe in Unity is possible, but will likely require extensiv
 - Enable users to cycle through Discord buttons and fields on desktop by pressing TAB repeatedly, ensuring that the activity does not capture control.
 - Implement the functionality for the ESC key to close any open in-activity modals, providing a consistent user experience.
 - Opt for color-blind friendly colors with high contrast, especially for crucial game elements that need to be distinguishable based on color. 
-- Avoid using similar colors for objects that are essential for gameplay but differ only in color, as this may pose challenges for color-blind users.
+- Avoid using similar colors for objects that are essential for gameplay but differ only in color, as this may pose challenges for color-blind users.