Modify CHANGES.rst with astropy#2995 PR

Author: David Gonzalez

CHANGES.rst

@@ -131,7 +131,7 @@ esa.hubble
 - Product types in download_product method have been modified to: PRODUCT, SCIENCE_PRODUCT or POSTCARD. [#2597]
 - Added ``proposal`` keyword argument to several methods now allows to filter by Proposal ID. [#2797]
 
-esa.jwst
+esa.jwt
 ^^^^^^^
 
 - Fixes in ``login`` and ``set_token`` methods. [#2807]