Update CHANGELOG.md

Correcting a typo in changelog

CHANGELOG.md

@@ -92,7 +92,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 * Corrected syntax errors in context schema examples ([#424](https://github.com/finos/FDC3/pull/424))
 * Corrected a minor error in the ViewQuote Intent example ([#439](https://github.com/finos/FDC3/pull/439))
 * Clarified behavior of `fdc3.addContextListener` when not joined to a channel ([#449](https://github.com/finos/FDC3/pull/449))
-* Clarified existing behavior of `joinChannel` and `addIntentListener` when joining a channel ([#454](https://github.com/finos/FDC3/pull/454))
+* Clarified existing behavior of `joinChannel` and `addContextListener` when joining a channel ([#454](https://github.com/finos/FDC3/pull/454))
 * Clarified numerous aspects of the existing `raiseIntent` behavior in the spec and documentation ([#461](https://github.com/finos/FDC3/pull/461))
 * Updated Methods.ts to support the updated signature for `addContextListener` introduced in FDC3 1.2 ([#462](https://github.com/finos/FDC3/pull/462))
 * Clarified the description of the addContextListener functions from the Desktop Agent and Channel APIs in spec and docs. ([#492](https://github.com/finos/FDC3/pull/492))