Fix devcontainer invalid key

.devcontainer/devcontainer.json

@@ -19,23 +19,24 @@
     "postCreateCommand": "freqtrade create-userdir --userdir user_data/",
 
     "workspaceFolder": "/workspaces/freqtrade",
-
-    "settings": {
-        "terminal.integrated.shell.linux": "/bin/bash",
-        "editor.insertSpaces": true,
-        "files.trimTrailingWhitespace": true,
-        "[markdown]": {
-            "files.trimTrailingWhitespace": false,
+    "customizations": {
+        "settings": {
+            "terminal.integrated.shell.linux": "/bin/bash",
+            "editor.insertSpaces": true,
+            "files.trimTrailingWhitespace": true,
+            "[markdown]": {
+                "files.trimTrailingWhitespace": false,
+            },
+            "python.pythonPath": "/usr/local/bin/python",
         },
-        "python.pythonPath": "/usr/local/bin/python",
-    },
 
-    // Add the IDs of extensions you want installed when the container is created.
-    "extensions": [
-        "ms-python.python",
-        "ms-python.vscode-pylance",
-        "davidanson.vscode-markdownlint",
-        "ms-azuretools.vscode-docker",
-        "vscode-icons-team.vscode-icons",
-    ],
+        // Add the IDs of extensions you want installed when the container is created.
+        "extensions": [
+            "ms-python.python",
+            "ms-python.vscode-pylance",
+            "davidanson.vscode-markdownlint",
+            "ms-azuretools.vscode-docker",
+            "vscode-icons-team.vscode-icons",
+        ],
+    }
 }