Removing references to old docs site 'https://redis-py.readthedocs.io/' replaced by 'https://redis.readthedocs.io/' (#3674)

Author: petyaslavova

README.md

@@ -3,7 +3,7 @@
 The Python interface to the Redis key-value store.
 
 [![CI](https://github.com/redis/redis-py/workflows/CI/badge.svg?branch=master)](https://github.com/redis/redis-py/actions?query=workflow%3ACI+branch%3Amaster)
-[![docs](https://readthedocs.org/projects/redis/badge/?version=stable&style=flat)](https://redis-py.readthedocs.io/en/stable/)
+[![docs](https://readthedocs.org/projects/redis/badge/?version=stable&style=flat)](https://redis.readthedocs.io/en/stable/)
 [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE)
 [![pypi](https://badge.fury.io/py/redis.svg)](https://pypi.org/project/redis/)
 [![pre-release](https://img.shields.io/github/v/release/redis/redis-py?include_prereleases&label=latest-prerelease)](https://github.com/redis/redis-py/releases)

docs/examples/README.md

@@ -1,3 +1,3 @@
 # Examples
 
-Examples of redis-py usage go here. They're being linked to the [generated documentation](https://redis-py.readthedocs.org).
+Examples of redis-py usage go here. They're being linked to the [generated documentation](https://redis.readthedocs.org).

docs/examples/opentelemetry/README.md

@@ -4,7 +4,7 @@ This example demonstrates how to monitor Redis using [OpenTelemetry](https://ope
 [Uptrace](https://github.com/uptrace/uptrace). It requires Docker to start Redis Server and Uptrace.
 
 See
-[Monitoring redis-py performance with OpenTelemetry](https://redis-py.readthedocs.io/en/latest/opentelemetry.html)
+[Monitoring redis-py performance with OpenTelemetry](https://redis.readthedocs.io/en/latest/opentelemetry.html)
 for details.
 
 **Step 1**. Download the example using Git: