Updated RESP3 docs (#1415)

* Added redis_url specification, updated release-drafter workflow

* Updated release-drafter

.github/workflows/release-drafter.yml

@@ -3,7 +3,9 @@ name: Release Drafter
 on:
   push:
     branches:
-      - v3.x
+      - main
+      - v2.**
+      - v3.**
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}

README.md

@@ -451,9 +451,15 @@ implementation of the standard connection classes available in the `Predis\Conne
 ### Connection ###
 To establish the connection using RESP3 protocol, you need to set parameter `protocol => 3`. Default protocol is still RESP2.
 
+You can pass parameter as configuration option in array or as a query parameter in `redis_url`
+
 ```php
+  // Configuration option
   $client = new \Predis\Client(['protocol' => 3]);
 
+  // Redis URL
+  $client = new \Predis\Client('redis://localhost:6379?protocol=3');
+
   // ["proto" => "3"]
   $client->executeRaw(['HELLO']);
 ```