fix vercel button

Co-authored-by: Jip Frijlink <JipFr@users.noreply.github.com>
Co-authored-by: William Oldham <github@binaryoverload.co.uk>

.docs/content/2.self-hosting/3.client.md

@@ -1,7 +1,7 @@
 # Setting up the client
 
 ## Vercel - Recommended
-[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fmovie-web%2Fmovie-web&env=VITE_CORS_PROXY_URL,VITE_TMDB_READ_API_KEY)
+[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fmovie-web%2Fmovie-web%2Ftree%2Fmaster&env=VITE_CORS_PROXY_URL,VITE_TMDB_READ_API_KEY)
 1. Click the Deploy button.
 1. Sign in using either a GitHub, GitLab, or Bitbucket.
 1. Follow the instructions to create a repository for movie-web.