Capital S, Dangit! is a WordPress plugin (download) that replaces “Javascript” with “JavaScript” in post content, post titles, and comment content.
It is a very lightweight, it has no settings, just activate it and it works immediately.
Capital S, Dangit! is released under the terms of GNU General Public License. It is completely free so if you find it useful you can give something back to author. Your help could be done by giving donation, sending pull request on GitHub, sending bugs and suggestions, promoting plugin in blogs, forums, social networks, and other websites.
Note: plugin author is not obliged to provide free support via this site, email, or official forum. If you ask for free support, please be aware that it might skipped.