Fix spellings in the CHANGELOG

Author: IshaanDesai

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 
 ## 3.2.1
 
-* Modify docstrings to higlight flexbility of the API in terms of its ability to handle multidimensional input data structures https://github.com/precice/python-bindings/pull/239
+* Modify docstrings to highlight flexibility of the API in terms of its ability to handle multidimensional input data structures https://github.com/precice/python-bindings/pull/239
 * Fix bug in `map_and_read_data` https://github.com/precice/python-bindings/pull/237
 
 ## 3.2.0