Ilee2u/fix acs actions - typo fix (#399)

* fix: correct acs actions constant

* fix: typo

Author: ilee2u

CHANGELOG.rst

@@ -16,7 +16,7 @@ Please See the `releases tab <https://github.com/openedx/xblock-lti-consumer/rel
 Unreleased
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-9.5.6 - 2023-07-27
+9.5.7 - 2023-07-27
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 * Fixed ACS actions constant.