update docs

Author: kunwuz

.idea/.gitignore

@@ -34,7 +34,7 @@ Causal-learn needs the following packages to be installed beforehand:
 * matplotlib
 * graphviz
 
-To use causal-learn, we could install it using [pip](https://pypi.org/project/sqlparse/):
+To use causal-learn, we could install it using [pip](https://pypi.org/project/causal-learn/):
 
 ```
 pip install causal-learn

.idea/causal-learn.iml

@@ -28,7 +28,7 @@ Requirements
 Install via PyPI
 ------------
 
-To use causal-learn, we could install it using `pip <https://pypi.org/project/sqlparse/>`_:
+To use causal-learn, we could install it using `pip <https://pypi.org/project/causal-learn/>`_:
 
 .. code-block:: console
 

.idea/csv-plugin.xml

@@ -9,8 +9,8 @@ Usage
 --------
 .. code-block:: python
 
-    from causallearn.utils.cit import chisq
-    p = chisq(data, X, Y, conditioning_set)
+    from causallearn.utils.cit import cit
+    p = cit.CIT(data, 'chisq')
 
 
 Parameters