help: Update message edit history documentation.

Co-authored-by: Tim Abbott <tabbott@zulip.com>

help/keyboard-shortcuts.md

@@ -150,6 +150,10 @@ in the Zulip app to add more to your repertoire as needed.
 
 * **Move message and (optionally) other messages in the same topic**: <kbd>M</kbd>
 
+* **View message edit and move history**: <kbd>Shift</kbd> +
+  <kbd>H</kbd>. Message edit history [must be
+  enabled](/help/disable-message-edit-history).
+
 * **Star message**: <kbd>Ctrl</kbd> + <kbd>S</kbd>
 
 * **React with <img alt=":thumbs_up:" class="emoji"

help/view-a-messages-edit-history.md

@@ -16,23 +16,14 @@ Organization administrators can
 
 {start_tabs}
 
-1. Click on the message's **EDITED** or **MOVED** label.
+1. Click on the message's **EDITED** or **MOVED** label shown next to
+   a user's name or to the left of each message in the message feed.
 
-{end_tabs}
+!!! tip ""
 
-### Via the message menu (alternate method)
-
-{start_tabs}
-
-{!message-actions-menu.md!}
-
-1. Click **View edit history**.
-
-!!! warn ""
-
-    You will only see **View edit history** in the dropdown
-    menu if the message has been moved or edited, and
-    message edit history is enabled in the organization.
+    In organizations where message edit history is disabled, you will
+    never see a **MOVED** label; messages that have been moved will be
+    marked as **EDITED** just like those whose content has been edited.
 
 {end_tabs}
 

web/templates/keyboard_shortcuts.hbs

@@ -228,6 +228,10 @@
                     <td class="definition">{{t 'Move messages or topic' }}</td>
                     <td><span class="hotkey"><kbd>M</kbd></span></td>
                 </tr>
+                <tr>
+                    <td class="definition">{{t 'View edit and move history' }}</td>
+                    <td><span class="hotkey"><kbd>Shift</kbd> + <kbd>H</kbd></span></td>
+                </tr>
                 <tr>
                     <td class="definition">{{t 'Star selected message' }}</td>
                     <td><span class="hotkey"><kbd>Ctrl</kbd> + <kbd>S</kbd></span></td>
@@ -258,10 +262,6 @@
                     <td class="definition">{{t 'Toggle topic mute' }}</td>
                     <td><span class="hotkey"><kbd>Shift</kbd> + <kbd>M</kbd></span></td>
                 </tr>
-                <tr>
-                    <td class="definition">{{t 'View edit history' }}</td>
-                    <td><span class="hotkey"><kbd>Shift</kbd> + <kbd>H</kbd></span></td>
-                </tr>
             </table>
         </div>
         <div>