Update README.rst

Author: GregWhiteyBialas

README.rst

@@ -14,7 +14,7 @@ Build the guide
 Prepare your build environment:
 
 Please note that Sphinx requires now python version 3.7+. Details: https://github.com/sphinx-contrib/autoprogram/pull/48.
-Default python version in CentOS 8 is 3.6. So either you use differnet distro, or install python 3.7+ manually.
+Default python version in CentOS 8 is 3.6. So either you use different distro, or install python 3.7+ manually.
 
 .. code-block:: console