fix: explicitly load docparams pylint plugin in .pylintrc (#109)

The old plugin name seems to be `check_docs`, but that plugin does not
seem to be available anymore.

Author: tk-woven

.pylintrc

@@ -1,4 +1,7 @@
 # Copyright 2019-2020 Toyota Research Institute.  All rights reserved.
+[MAIN]
+load-plugins=pylint.extensions.docparams
+
 [MASTER]
 accept-no-param-doc=no
 accept-no-return-doc=yes
@@ -68,4 +71,4 @@ disable=
    W0621,
    E0102,
    W0612
-   ##@scope
+   ##@scope