Updated link to AppVeyor badge.

Author: Lastique

README.md

@@ -20,7 +20,7 @@ Boost.Filesystem, part of collection of the [Boost C++ Libraries](https://github
 
 Branch          | GitHub Actions | AppVeyor | Test Matrix | Dependencies |
 :-------------: | -------------- | -------- | ----------- | ------------ |
-[`master`](https://github.com/boostorg/filesystem/tree/master) | [![GitHub Actions](https://github.com/boostorg/filesystem/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/filesystem/actions?query=branch%3Amaster) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/nx3e7bcavvn3q953?svg=true)](https://ci.appveyor.com/project/Lastique/filesystem/branch/master) | [![Tests](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/filesystem.html) | [![Dependencies](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/filesystem.html)
+[`master`](https://github.com/boostorg/filesystem/tree/master) | [![GitHub Actions](https://github.com/boostorg/filesystem/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/filesystem/actions?query=branch%3Amaster) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/nx3e7bcavvn3q953/branch/master?svg=true)](https://ci.appveyor.com/project/Lastique/filesystem/branch/master) | [![Tests](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/filesystem.html) | [![Dependencies](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/filesystem.html)
 [`develop`](https://github.com/boostorg/filesystem/tree/develop) | [![GitHub Actions](https://github.com/boostorg/filesystem/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/filesystem/actions?query=branch%3Adevelop) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/nx3e7bcavvn3q953/branch/develop?svg=true)](https://ci.appveyor.com/project/Lastique/filesystem/branch/develop) | [![Tests](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](http://www.boost.org/development/tests/develop/developer/filesystem.html) | [![Dependencies](https://img.shields.io/badge/deps-develop-brightgreen.svg)](https://pdimov.github.io/boostdep-report/develop/filesystem.html)
 
 ### License