docs: Fix typo in Python configuration example (#38434)

Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <git@maxdeviant.com>

docs/src/languages/python.md

@@ -81,11 +81,13 @@ These are disabled by default, but can be enabled in your settings. For example:
 {
   "languages": {
     "Python": {
-      "language_servers": {
+      "language_servers": [
         // Disable basedpyright and enable Ty, and otherwise
         // use the default configuration.
-        "ty", "!basedpyright", ".."
-      }
+        "ty",
+        "!basedpyright",
+        "..."
+      ]
     }
   }
 }