docs(README): missing , (#44)

README.md

@@ -32,7 +32,7 @@ require("neotest").setup({
         -- Can also be a function to return dynamic value.
         -- If not provided, the path will be inferred by checking for 
         -- virtual envs in the local directory and for Pipenev/Poetry configs
-        python = ".venv/bin/python"
+        python = ".venv/bin/python",
         -- Returns if a given file path is a test file.
         -- NB: This function is called a lot so don't perform any heavy tasks within it.
         is_test_file = function(file_path)