Update README.rst

Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>

Author: vinitkumar

README.rst

@@ -22,7 +22,7 @@ The library was initially dependent on the `dict2xml` project, but it has now be
 
 
 
-Archictecure Diagram
+Architecture Diagram
 ^^^^^^^^^^^^^^^^^^^^
 
 .. image:: ./diagram.png