fix spelling error

Author: kmolo

learn_to_program.md

@@ -167,7 +167,7 @@
     * [CTF Field Guide](http://trailofbits.github.io/ctf/index.html)
     * [picoCTF](https://picoctf.com/) -- Carnegie Mellon University's CTF training app
     * [https://ctftime.org/](https://ctftime.org/) - archive of old Capture The Flag (CTF) competitions and calendar of upcoming ones
-    * [Collaborating to Win](https://www.youtube.com/watch?v=6X3xSsoqoFw) -- presentaton on Collaborative CTF Infrastructure (video)
+    * [Collaborating to Win](https://www.youtube.com/watch?v=6X3xSsoqoFw) -- presentation on Collaborative CTF Infrastructure (video)
 * Bug Bounty links:
     * [Bug Bounties 101 - Getting Started](https://fin1te.net/articles/bug-bounties-101-getting-started/)
     * [Bugcrowd blog](https://blog.bugcrowd.com/) - for bug bounty community