add root_path argument to server init

Author: FoamyGuy

PicoW_CircuitPython_HTTP_Server/code.py

@@ -82,7 +82,7 @@ def c_to_f(temp):
 
 print("Connected to WiFi")
 pool = socketpool.SocketPool(wifi.radio)
-server = HTTPServer(pool)
+server = HTTPServer(pool, "/static")
 
 #  variables for HTML
 #  comment/uncomment desired temp unit