Update RtD config

Author: vemel

.readthedocs.yml

@@ -5,6 +5,11 @@
 # Required
 version: 2
 
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
 # Build documentation with MkDocs
 mkdocs:
   configuration: "mkdocs.yml"

README.md

@@ -4,7 +4,6 @@
 [![PyPI - Handsdown](https://img.shields.io/pypi/v/handsdown.svg?color=blue&label=awscliv2e)](https://pypi.org/project/handsdown)
 [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/handsdown.svg?color=blue)](https://pypi.org/project/handsdown)
 [![PyPI - Downloads](https://static.pepy.tech/badge/handsdown)](https://pepy.tech/project/handsdown)
-[![Build Status](https://img.shields.io/travis/vemel/handsdown.svg)](https://travis-ci.org/vemel/handsdown)
 [![Code Coverage](https://img.shields.io/codecov/c/gh/vemel/handsdown.svg)](https://codecov.io/gh/vemel/handsdown/tree/main/handsdown)
 [![Docs](https://img.shields.io/readthedocs/handsdown.svg?color=blue)](https://handsdown.readthedocs.io/)