Moved actions with collection response/invitation to OpenAPI

Author: DaniilIdrisov

docs_eng/employer_negotiations.md

@@ -12,7 +12,8 @@
 * [View the list of messages in the response/invitation](#get-messages)
 * [Sending a message in the response/invitation](#add-messages)
 * [Inviting an applicant for a vacancy](#add-invite)
-* [Actions regarding a response/invitation (status change)](#actions)
+* [Changing the response/invite state](https://api.hh.ru/openapi/en/redoc#tag/Employer-responsesinvitations/operation/change-negotiation-action)
+* [Changing the state of multiple responses/invites](https://api.hh.ru/openapi/en/redoc#tag/Employer-responsesinvitations/operation/put-negotiations-collection-to-next-state)
 * [Viewing preferred options for sorting responses](#get-preference-order)
 * [Changing preferred options for sorting responses](#update-preference-order)
 * [Mark responses as read](https://api.hh.ru/openapi/en/redoc#tag/Employer-responsesinvitations/operation/post-negotiations-topics-read)