Format feature request issue template

.github/ISSUE_TEMPLATE/0_feature_request.yml

@@ -2,23 +2,23 @@ name: Feature Request
 description: "Tip: open this issue template from within Zed with the `request feature` command palette action"
 labels: ["admin read", "triage", "enhancement"]
 body:
-  - type: checkboxes
-    attributes:
-      label: Check for existing issues
-      description: Check the backlog of issues to reduce the chances of creating duplicates; if an issue already exists, place a `+1` (👍) on it.
-      options:
-        - label: Completed
+    - type: checkboxes
+      attributes:
+          label: Check for existing issues
+          description: Check the backlog of issues to reduce the chances of creating duplicates; if an issue already exists, place a `+1` (👍) on it.
+          options:
+              - label: Completed
+                required: true
+    - type: textarea
+      attributes:
+          label: Describe the feature
+          description: A clear and concise description of what you want to happen.
+      validations:
           required: true
-  - type: textarea
-    attributes:
-      label: Describe the feature
-      description: A clear and concise description of what you want to happen.
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: |
-        If applicable, add mockups / screenshots to help present your vision of the feature
-      description: Drag images into the text input below
-    validations:
-      required: false
+    - type: textarea
+      attributes:
+          label: |
+              If applicable, add mockups / screenshots to help present your vision of the feature
+          description: Drag images into the text input below
+      validations:
+          required: false