My account: API keys section disclaimer (#3249)

docs/ENVS.md

@@ -380,6 +380,7 @@ Settings for meta tags, OG tags and SEO
 | NEXT_PUBLIC_HIDE_INDEXING_ALERT_INT_TXS | `boolean` | Set to `true` to hide indexing alert in the page footer about indexing block's internal transactions | - | `false` | `true` | v1.17.0+ |
 | NEXT_PUBLIC_HIDE_NATIVE_COIN_PRICE | `boolean` | Set to `true` to hide the native coin price in the top bar | - | `false` | `true` | v2.4.0+ |
 | NEXT_PUBLIC_MAINTENANCE_ALERT_MESSAGE | `string` | Used for displaying custom announcements or alerts in the header of the site. Could be a regular string or a HTML code. | - | - | `Hello world! 🤪` | v1.13.0+ |
+| NEXT_PUBLIC_API_KEYS_ALERT_MESSAGE | `string` | Used for displaying custom alerts on the API keys page. Could be a regular string or a HTML code. | - | - | `Hello world! 🤪` | v2.7.0+ |
 | NEXT_PUBLIC_COLOR_THEME_DEFAULT | `'light' \| 'dim' \| 'midnight' \| 'dark'` | Preferred color theme of the app | - | - | `midnight` | v1.30.0+ |
 | NEXT_PUBLIC_COLOR_THEME_OVERRIDES | `string` | Color overrides for the default theme; pass a JSON-like string that represents a subset of the `DEFAULT_THEME_COLORS` object (see `toolkit/theme/foundations/colors.ts`) to customize the app's main colors. See [here](https://www.figma.com/design/4In0X8UADoZaTfZ34HaZ3K/Blockscout-design-system?node-id=29124-23813&t=XOv4ahHUSsTDlNkN-4) the Figma worksheet with description of available color tokens. | - | - | `{'text':{'primary':{'_light':{'value':'rgba(16,17,18,0.80)'},'_dark':{'value':'rgba(222,217,217)'}}}}` | v2.3.0+ |
 | NEXT_PUBLIC_FONT_FAMILY_HEADING | `FontFamily`, see full description [below](#font-family-configuration-properties) | Special typeface to use in page headings (`<h1>`, `<h2>`, etc.) | - | - | `{'name':'Montserrat','url':'https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap'}` | v1.35.0+ |