fix: update docs

Author: jonathanmorris180

doc/salesforce.txt

@@ -57,7 +57,7 @@ You can pass in a lua table of options to customize the plugin. The default opti
 Setup function
 
 Parameters ~
-{opts} `(table)` | nil Module config table. See |Config.options|.
+{opts} `(table | nil)` Module config table. See |Config.options|.
 
 Usage ~
 `require("salesforce").setup({})`