docs: Update the gear menu icon.

This commit updates the /help and /api docs to reflect the new gear
menu icon introduced in bc3d486.

api_docs/deploying-bots.md

@@ -89,7 +89,7 @@ pip3 install zulip_botserver
 1. Register new bot users on the Zulip server's web interface.
 
     * Log in to the Zulip server.
-    * Navigate to *Personal settings (<i class="fa fa-cog"></i>)* -> *Bots* -> *Add a new bot*.
+    * Navigate to *Personal settings (<i class="zulip-icon zulip-icon-gear"></i>)* -> *Bots* -> *Add a new bot*.
       Select *Outgoing webhook* for bot type, fill out the form (using
       the URL from above) and click on *Create bot*.
     * A new bot user should appear in the *Active bots* panel.

api_docs/outgoing-webhooks.md

@@ -18,7 +18,7 @@ with porting an existing Slack integration to work with Zulip.
 To register an outgoing webhook:
 
 * Log in to the Zulip server.
-* Navigate to *Personal settings (<i class="fa fa-cog"></i>)* -> *Bots* ->
+* Navigate to *Personal settings (<i class="zulip-icon zulip-icon-gear"></i>)* -> *Bots* ->
   *Add a new bot*.  Select *Outgoing webhook* for bot type, the URL
   you'd like Zulip to post to as the **Endpoint URL**, the format you
   want, and click on *Create bot*. to submit the form/

help/include/invite-users.md

@@ -1,4 +1,4 @@
-1. Click on the **gear** (<i class="fa fa-cog"></i>) icon in the upper
+1. Click on the **gear** (<i class="zulip-icon zulip-icon-gear"></i>) icon in the upper
    right corner of the web or desktop app.
 
 1. Select <i class="fa fa-user-plus"></i> **Invite users**.

help/logging-in.md

@@ -56,7 +56,7 @@ Here are some ways to find the URL for your Zulip organization.
 * On [Zulip Cloud](https://zulip.com/plans/) and other Zulip servers updated to
   [Zulip 6.0 or
   higher](https://zulip.readthedocs.io/en/stable/overview/changelog.html#zulip-6-x-series),
-  click the **gear** (<i class="fa fa-cog"></i>) icon in the upper right
+  click the **gear** (<i class="zulip-icon zulip-icon-gear"></i>) icon in the upper right
   corner of the web or desktop app. Your organization's log in URL is shown in the top
   section of the menu.
 

help/logging-out.md

@@ -3,7 +3,7 @@
 {start_tabs}
 {tab|desktop-web}
 
-1. Click the **gear** (<i class="fa fa-cog"></i>) icon in the top
+1. Click the **gear** (<i class="zulip-icon zulip-icon-gear"></i>) icon in the top
 right corner of the app.
 
 1. Click **Log out**.

help/view-zulip-version.md

@@ -19,7 +19,7 @@ Zulip Cloud organizations are always updated to the latest version of Zulip.
 
 {tab|v6}
 
-1. Click on the **gear** (<i class="fa fa-cog"></i>) icon in the upper
+1. Click on the **gear** (<i class="zulip-icon zulip-icon-gear"></i>) icon in the upper
    right corner of the web or desktop app.
 
 1. View the version number or Zulip Cloud plan in the top section of the menu.

zerver/lib/markdown/help_settings_links.py

@@ -102,7 +102,7 @@ link_mapping = {
 }
 
 settings_markdown = """
-1. Click on the **gear** (<i class="fa fa-cog"></i>) icon in the upper
+1. Click on the **gear** (<i class="zulip-icon zulip-icon-gear"></i>) icon in the upper
    right corner of the web or desktop app.
 
 1. Select **{setting_type_name}**.