fix type in change-note

Co-authored-by: intrigus-lgtm <60750685+intrigus-lgtm@users.noreply.github.com>

Author: erik-krogh

javascript/change-notes/2021-02-10-markdown.md

@@ -1,5 +1,5 @@
 lgtm,codescanning
-* The dataflow libraries now model dataflow in markdown parses.
+* The dataflow libraries now model dataflow in markdown parsers.
   Affected packages are
     [marked](https://npmjs.com/package/marked), 
     [markdown-table](https://npmjs.com/package/markdown-table),