docs: fix a typo in changelog

changes/v5.0.15/fix-9765.en.md

@@ -3,4 +3,4 @@ Prior to this change, config values for passwords are not allowed to be decimals
 e.g. `EMQX_FOOBAR__PASSWORD=12344` or `emqx.foobar.password=1234`
 would result in a type check error, unless quoted as:
 `EMQX_FOOBAR__PASSWORD='"12344"'` or `emqx.foobar.password="1234"`.
-After this fix, the value does not have to be auoted.
+After this fix, the value does not have to be quoted.