Reset release notes and pending docs for next release (#1743)

Author: Connor McMahon

pending_docs.md

@@ -1,3 +1,2 @@
 <!-- Please include a link to your pending docs PR below. https://docs.microsoft.com/en-us/azure/azure-functions/durable ([private docs repo for Microsoft employees](http://github.com/MicrosoftDocs/azure-docs-pr)). 
-Your code PR should not be merged until your docs PR has been signed off. -->
-https://github.com/MicrosoftDocs/azure-docs-pr/pull/149980
+Your code PR should not be merged until your docs PR has been approved. Wait to #sign-off until release. -->

release_notes.md

@@ -1,11 +1,5 @@
 ## New Features
-- Added support to select a storage backend provider when multiple are installed (#1702): Select which storage backend to use by setting the `type` field under `durableTask/storageProvider` in host.json. If this field isn't set, then the storage backend will default to using Azure Storage.
-- Improved concurrency defaults for the App Service Consumption plan (https://github.com/Azure/azure-functions-durable-extension/pull/1706)
 
-## Bug Fixes:
-- Properly used update management API URLs after a successful slot swap on Functions V3 (#1716)
-- Fix race condition when multiple apps start with local RPC endpoints on the same VM in parallel. (#1719)
-- Fix CallHttpAsync() to throw an HttpRequestException instead of a serialization exception if the target endpoint doesn't exist (#1718)
+## Bug fixes
 
-## Breaking changes
-- Fix CallHttpAsync() to throw an HttpRequestException instead of a serialization exception if the target endpoint doesn't exist (#1718). This is a breaking change if you were handling `HttpRequestException`s by catching `FunctionFailedException`s.
+## Breaking Changes