DOC: update of readthedocs config yaml

.readthedocs.yml

@@ -1,10 +1,19 @@
-# See: https://docs.readthedocs.io/en/latest/yaml-config.html
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
 # .readthedocs.yml
 
+# Required
+version: 2
+
+# Set the version of Python
 build:
-  image: latest
+  os: ubuntu-22.04
+  tools:
+    python: "3.10"
 
 python:
-  version: 3.6
-  setup_py_install: true
-
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - doc

README.rst

@@ -10,7 +10,7 @@ Phi_K Correlation Constant
 
 Phi_K is a practical correlation constant that works consistently between categorical, ordinal and interval variables.
 It is based on several refinements to Pearson's hypothesis test of independence of two variables. Essentially, the
-contingency test statistic of two variables is interpreted as coming from a rotated bi-variate normal distribution,
+contingency test statistic of two variables is interpreted as if coming from a rotated bi-variate normal distribution,
 where the tilt is interpreted as Phi_K.
 
 The combined features of Phi_K form an advantage over existing coefficients. First, it works consistently between categorical, ordinal and interval variables.