user docs: Make minor updates to docs in Using Zulip.

templates/zerver/help/change-your-email-address.md

@@ -14,8 +14,8 @@ Organization adminstrators can
 
 4. You will receive a confirmation email within a few minutes. Open it and click **Confirm email change**.
 
-    !!! warn ""
-        **Note:** If you are unable to click on the button with your email address, check
-        that your organization allows email changes. Follow the steps at
-        [prevent users from changing their names](/help/restrict-name-and-email-changes)
-        to view your organization's settings.
+!!! warn ""
+    **Note:** If you are unable to click on the button with your email address, check
+    that your organization allows email changes. Follow the steps at
+    [prevent users from changing their names](/help/restrict-name-and-email-changes)
+    to view your organization's settings.

templates/zerver/help/night-mode.md

@@ -1,8 +1,7 @@
 # Night mode
 
-By default, Zulip has a white background, which works well for most
-environments.  However, Zulip also provides a "night mode", which is great
-for working in a dark space.
+By default, Zulip has a white background. Zulip also provides a
+"night mode", which is great for working in a dark space.
 
 {settings_tab|display-settings}
 

templates/zerver/help/start-a-call.md

@@ -3,10 +3,9 @@
 1. Compose a [new message or reply](/help/reply-to-a-message).
 
 2. Click the video-camera (<i class="fa fa-video-camera"></i>) icon in the
-bottom left corner of the compose box.
-
-3. Clicking the video camera (<i class="fa fa-video-camera"></i>)
-icon will insert a link like **[Click to join video call]\(https://meet.jit.si/123456789)** into the compose box.
+bottom left corner of the compose box. This will insert a link like
+**[Click to join video call]\(https://meet.jit.si/123456789)** into the
+compose box.
 
 4. Send the message.
 

templates/zerver/help/troubleshooting-desktop-notifications.md

@@ -1,6 +1,6 @@
 # Troubleshooting desktop notifications
 
-First, make sure you are getting
+First, make sure you have enabled
 [desktop notifications for PMs](/help/pm-mention-alert-notifications) or for the
 [stream](/help/stream-notifications) you are testing with.
 

templates/zerver/help/view-the-markdown-source-of-a-message.md

@@ -1,15 +1,12 @@
 # View the Markdown source of a message
 
-When someone in your your Zulip organization sends a message, you can view the
-Markdown source of the message to learn more about the message's formatting or
-reuse the message's Markdown source in a reply.
+You can view the Markdown source of a message to learn how the message was
+formatted, or to copy the Markdown source for a reply.
 
 {!message-actions.md!}
 {!down-chevron.md!}
 
-3. Click on the **View source** option from the actions dropdown to view the
-markdown source of a message.
+3. Click **View source**.
 
 !!! tip ""
-    You can also view the Markdown source of your own messages if they are too
-    old to edit.
+    You can also view the Markdown source of your own past messages.