corrected logic in custom path check

Author: mattvaldes

defectdojo_api/defectdojo.py

@@ -34,7 +34,7 @@ def __init__(self, host, api_key, user, api_version='v1', verify_ssl=True, timeo
         self.proxies = proxies
         self.timeout = timeout
 
-        if host.split('/')[3]:
+        if host.split('/') > 3:
             self.custom_path = '/' + '/'.join(host.split('/')[3:]).rstrip('/')
         else:
             self.custom_path = ''