fixup changelog

Author: timotheecour

changelog.md

@@ -38,8 +38,8 @@
 ## Language changes
 
 - `nimscript` now handles `except Exception as e`
-- The `cstring` doesn't support `[]=` operator in JS backend.
 
+- The `cstring` doesn't support `[]=` operator in JS backend.
 
 - `const` now works with types containing `ref`, see `tests/vm/tconstrefs.nim`