Update blog post to have correct file extension (#4568)

* Update blog post to have correct file extension

@mhdawson and I noticed this article about the trademarks did not show up in the list of articles here: https://nodejs.org/en/blog/

We realized that the file extension was missing. Which is my bad in original PR.

* Fixing linting issues

Author: joesepi

…demarks-transferred-to-openjs-foundation …arks-transferred-to-openjs-foundation.mdlocale/en/blog/announcements/nodejs-trademarks-transferred-to-openjs-foundation renamed to locale/en/blog/announcements/nodejs-trademarks-transferred-to-openjs-foundation.md locale/en/blog/announcements/nodejs-trademarks-transferred-to-openjs-foundation renamed to locale/en/blog/announcements/nodejs-trademarks-transferred-to-openjs-foundation.md

@@ -7,9 +7,6 @@ layout: blog-post.hbs
 author: Joe Sepi
 ---
 
-Exciting news today for the Node.js project: Joyent has transferred ownership of 
-its trademarks to the OpenJS Foundation. Nothing will change for contributors, but 
-the OpenJS Foundation will become the steward of the trademarks that help protect 
-the work of the Node.js collaborators.
+Exciting news today for the Node.js project: Joyent has transferred ownership of its trademarks to the OpenJS Foundation. Nothing will change for contributors, but the OpenJS Foundation will become the steward of the trademarks that help protect the work of the Node.js collaborators.
 
 Read more on the [OpenJS blog](https://openjsf.org/blog/2022/02/14/node-js-trademarks-transferred-to-openjs-foundation/)