feat(docs): add NC_SANITIZE_COLUMN_NAME

packages/noco-docs/docs/020.getting-started/050.self-hosted/020.environment-variables.md

@@ -69,3 +69,4 @@ For production use-cases, it is **recommended** to configure
 | NC_SECURE_ATTACHMENTS              | Allow accessing attachments only through presigned urls. To enable set value as `true` any other value treated as false. (⚠ this will make existing links inaccessible ⚠)                                                                   | `false`                                                                                        |
 | NC_ATTACHMENT_EXPIRE_SECONDS       | How many seconds before expiring presigned attachment urls. (Attachments will expire in at least set seconds and at most 10mins after set time)                                                                                             | 7200 (2 hours)                                                                                 |
 | NC_ALLOW_LOCAL_HOOKS               | To enable set value as `true` any other value treated as false. (⚠ this will allow webhooks to call local links which can raise security issues ⚠)                                                                                          | `false`                                                                                        |
+| NC_SANITIZE_COLUMN_NAME               | Sanitize the column name during column creation. To enable set value as `true` any other value treated as false.                                                                                        | `true`                                                                                        |