Update Changelog.md

Signed-off-by: chloefeal <188809157+chloefeal@users.noreply.github.com>

Author: chloefeal

Changelog.md

@@ -1440,7 +1440,7 @@ Language Features:
  * Introduce ``virtual`` and ``override`` keywords.
  * Modify ``push(element)`` for dynamic storage arrays such that it does not return the new length anymore.
  * Yul: Introduce ``leave`` statement that exits the current function.
- * JSON AST: Add the function selector of each externally-visible FunctonDefinition to the AST JSON export.
+ * JSON AST: Add the function selector of each externally-visible FunctionDefinition to the AST JSON export.
 
 Compiler Features:
  * Allow revert strings to be stripped from the binary using the ``--revert-strings`` option or the ``settings.debug.revertStrings`` setting.