save fit parameter and agr; more doc

doc/Makefile

@@ -5,8 +5,8 @@
 # from the environment for the first two.
 SPHINXOPTS    ?=
 SPHINXBUILD   ?= /autohome/dominik/miniconda3/bin/sphinx-build
-SOURCEDIR     = /autohome/dominik/nmreval/docs/source
-BUILDDIR      = /autohome/dominik/nmreval/docs/build
+SOURCEDIR     = /autohome/dominik/nmreval/doc/source
+BUILDDIR      = /autohome/dominik/nmreval/doc/_build
 
 # Put it first so that "make" without argument is like "make help".
 help: