docs: Add user guide for Change your organization's name

templates/zerver/help/change-your-organizations-name.md

@@ -0,0 +1,22 @@
+# Change your organization's name
+Only an administrator can change the name of the organization.
+
+Follow these steps to change the name of the organization
+using an administrator account:
+
+1. Click on the cog (![cog](/static/images/help/cog.png)) icon
+in the upper right corner of the right sidebar.
+2. Choose **Administration** in the panel below:
+
+    ![admin-panel](/static/images/help/admin.png)
+
+3. The following window with a list of Organization settings will appear:
+
+    ![admin-window](/static/images/help/admin-window.png)
+
+4. Edit your organization's name in the **Your organization's name** textbox.
+You can choose any name of up to 40 characters for your organization.
+5. After editing the organization's name, you can save the changes by
+clicking on the **Save changes** button.
+
+    ![admin-save-changes](/static/images/help/admin-save-changes.png)

templates/zerver/help/index.md

@@ -127,7 +127,7 @@ as a “**realm**”.
 # Administering a Zulip organization
 
 ## Organization Settings
-* Change your organization's name
+* [Change your organization's name](/help/change-your-organizations-name)
 * Restrict user email addresses to certain domains
 * Allow anyone to join without an invitation
 * [Only allow admins to invite new users](/help/only-allow-admins-to-invite-new-users)