help center: Update "Mute a stream" and "Pin a stream" pages.

Update pages to follow our current help center documentation patterns.

help/mute-a-stream.md

@@ -17,9 +17,11 @@ sorted to the bottom of their section.
 
 {start_tabs}
 
+{tab|desktop-web}
+
 {!stream-actions.md!}
 
-3. Select **Mute stream**.
+1. Click **Mute stream**.
 
 {end_tabs}
 
@@ -28,9 +30,27 @@ sorted to the bottom of their section.
 
 {start_tabs}
 
+{tab|desktop-web}
+
 {!stream-actions.md!}
 
-3. Select **Unmute stream**.
+1. Click **Unmute stream**.
+
+{end_tabs}
+
+## Alternate method to mute or unmute a stream
+
+{start_tabs}
+
+{tab|desktop-web}
+
+{relative|stream|subscribed}
+
+1. Select a stream.
+
+{!select-stream-view-personal.md!}
+
+1. Under **Personal settings**, toggle **Mute stream**.
 
 {end_tabs}
 

help/pin-a-stream.md

@@ -44,7 +44,7 @@ which is especially handy if you are subscribed to a large number of streams.
 
 {end_tabs}
 
-### Alternate method
+## Alternate method to pin or unpin a stream
 
 {start_tabs}
 
@@ -69,3 +69,8 @@ which is especially handy if you are subscribed to a large number of streams.
 {!mobile-stream-settings-menu-tip.md!}
 
 {end_tabs}
+
+## Related articles
+
+* [Browse and subscribe to streams](/help/browse-and-subscribe-to-streams)
+* [Mute a stream](/help/mute-a-stream)