update snooty for branch name

Author: terakilobyte

snooty.toml

@@ -15,7 +15,7 @@ sharedinclude_root = "https://raw.githubusercontent.com/10gen/docs-shared/main/"
 
 [constants]
 driver-long = "MongoDB C#/.NET Driver"
-docs-branch = "main" # always set this to the docs branch (i.e. master, 1.7, 1.8, etc.)
+docs-branch = "master" # always set this to the docs branch (i.e. master, 1.7, 1.8, etc.)
 version = "v2.17" # always set this to the driver branch (i.e. v1.7.0, v1.8.0, etc.)
 example = "https://raw.githubusercontent.com/mongodb/docs-csharp/{+docs-branch+}/source/includes/usage-examples/code-snippets"
 stable-api = "Stable API"