small fix

Author: rustagir

snooty.toml

@@ -39,7 +39,7 @@ php-library = "MongoDB PHP Library"
 [constants]
 php-library = "MongoDB PHP Library"
 version = "2.0"
-source-gh-branch = "v1.x"
+source-gh-branch = "v2.x"
 full-version = "{+version+}.0"
 extension-short = "PHP extension"
 mdb-server = "MongoDB Server"