update docs

Author: Bamieh

docs/development/core/server/kibana-plugin-core-server.deprecationsdetails.correctiveactions.md

@@ -15,6 +15,6 @@ correctiveActions: {
                 [key: string]: any;
             };
         };
-        manualSteps?: string[];
+        manualSteps: string[];
     };
 ```

docs/development/core/server/kibana-plugin-core-server.deprecationsdetails.md

@@ -14,7 +14,7 @@ export interface DeprecationsDetails
 
 |  Property | Type | Description |
 |  --- | --- | --- |
-|  [correctiveActions](./kibana-plugin-core-server.deprecationsdetails.correctiveactions.md) | <code>{</code><br/><code>        api?: {</code><br/><code>            path: string;</code><br/><code>            method: 'POST' &#124; 'PUT';</code><br/><code>            body?: {</code><br/><code>                [key: string]: any;</code><br/><code>            };</code><br/><code>        };</code><br/><code>        manualSteps?: string[];</code><br/><code>    }</code> |  |
+|  [correctiveActions](./kibana-plugin-core-server.deprecationsdetails.correctiveactions.md) | <code>{</code><br/><code>        api?: {</code><br/><code>            path: string;</code><br/><code>            method: 'POST' &#124; 'PUT';</code><br/><code>            body?: {</code><br/><code>                [key: string]: any;</code><br/><code>            };</code><br/><code>        };</code><br/><code>        manualSteps: string[];</code><br/><code>    }</code> |  |
 |  [deprecationType](./kibana-plugin-core-server.deprecationsdetails.deprecationtype.md) | <code>'config' &#124; 'feature'</code> | (optional) Used to identify between different deprecation types. Example use case: in Upgrade Assistant, we may want to allow the user to sort by deprecation type or show each type in a separate tab.<!-- -->Feel free to add new types if necessary. Predefined types are necessary to reduce having similar definitions with different keywords across kibana deprecations. |
 |  [documentationUrl](./kibana-plugin-core-server.deprecationsdetails.documentationurl.md) | <code>string</code> |  |
 |  [level](./kibana-plugin-core-server.deprecationsdetails.level.md) | <code>'warning' &#124; 'critical' &#124; 'fetch_error'</code> | levels: - warning: will not break deployment upon upgrade - critical: needs to be addressed before upgrade. - fetch\_error: Deprecations service failed to grab the deprecation details for the domain. |

src/core/server/server.api.md

@@ -872,7 +872,7 @@ export interface DeprecationsDetails {
                 [key: string]: any;
             };
         };
-        manualSteps?: string[];
+        manualSteps: string[];
     };
     deprecationType?: 'config' | 'feature';
     // (undocumented)