Add documentation

Author: danilo-leal

assets/settings/default.json

@@ -559,6 +559,8 @@
     "close_position": "right",
     // Whether to show the file icon for a tab.
     "file_icons": false,
+    // Whether to always show the close button on tabs.
+    "always_show_close_button": false,
     // What to do after closing the current tab.
     //
     // 1. Activate the tab that was open previously (default)

docs/src/configuring-zed.md

@@ -634,7 +634,8 @@ List of `string` values
   "close_position": "right",
   "file_icons": false,
   "git_status": false,
-  "activate_on_close": "history"
+  "activate_on_close": "history",
+  "always_show_close_button": false
 },
 ```
 
@@ -698,6 +699,20 @@ List of `string` values
 }
 ```
 
+### Always show the close button
+
+- Description: Whether to always show the close button on tabs.
+- Setting: `always_show_close_button`
+- Default: `false`
+
+2. Activate the neighbour tab (prefers the right one, if present):
+
+```json
+{
+  "activate_on_close": "neighbour"
+}
+```
+
 ## Editor Toolbar
 
 - Description: Whether or not to show various elements in the editor toolbar.