```diff
--- test_files/538-original.txt	2025-03-07 19:07:07
+++ test_files/538-modified.txt	2025-03-07 19:07:07
@@ -1,10 +1,15 @@
 ---
 title: "Integrations"
 sidebarTitle: "Integrations"
-icon: "plug"
 description: "Allow your users to connect with any Apps."
 ---
 
+# OpenAPI Specification
+
+Make sure to have `info` section in your OpenAPI Specification. In the info section, you should have the following fields:
+- `title`: Name of the tool
+- `version`: Version of the tool/spec
+
 # Integration YAML Configuration
 
 This README provides an overview of the `integration.yaml` file structure used for configuring app integrations, with a focus on custom fields.
\ No newline at end of file
@@ -27,7 +32,7 @@
 
 2. **Authentication Schemes**
    - `auth_schemes`: List of authentication methods supported
-     - `scheme_name`: Name of the auth scheme
+     - `name`: Name of the auth scheme
      - `auth_mode`: Authentication mode (Supported modes: OAUTH2, BASIC, API_KEY, OAUTH1)
      - For OAuth2:
        - `authorization_url`: OAuth authorization URL
\ No newline at end of file
@@ -43,7 +48,12 @@
        - `default_scopes`: Default OAuth scopes
        - `scope_separator`: Character used to separate scopes
      - For API Key:
-       
+       ```yaml
+       proxy:
+         base_url: "{{base_url}}"
+         headers:
+           Authorization: "{{api_key}}"
+       ```
      - For Basic Auth:
        `username` and `password` fields are required. You can use them in the proxy/header section directly like:
        ```yaml
\ No newline at end of file
@@ -61,7 +71,7 @@
 
    Common attributes for custom fields include:
    - `name`: Unique identifier for the field
-   - `displayName`: Human-readable name for the field
+   - `display_name`: Human-readable name for the field
    - `description`: Detailed explanation of the field's purpose
    - `type`: Data type of the field (e.g., string, boolean)
    - `required`: Whether the field is mandatory
\ No newline at end of file
@@ -74,7 +84,7 @@
    ```yaml
    fields:
      - name: api_key
-       displayName: API Key
+       display_name: API Key
        description: "Your API key for authentication."
        type: string
        required: true
\ No newline at end of file
@@ -85,7 +95,7 @@
    ```yaml
    fields:
      - name: instanceUrl
-       displayName: Instance URL
+       display_name: Instance URL
        description: "The base URL for your instance, used for API requests."
        type: string
        required: true
\ No newline at end of file
@@ -96,7 +106,7 @@
    ```yaml
    fields:
      - name: subdomain
-       displayName: Sub Domain
+       display_name: Sub Domain
        description: "Your PostHog subdomain (e.g., 'app' for app.posthog.com)."
        type: string
        required: true
\ No newline at end of file
```
