Update README.md to include description for the Hacktoberfest (#958)

Author: Kit-Kat31415926

README.md

@@ -212,7 +212,7 @@ If you have questions or comments, please create an issue.
 - [Free Software Foundation (FSF) Internship](https://www.fsf.org/volunteer/internships)
 - [Google Summer of Code](https://summerofcode.withgoogle.com/) - An annually run paid program by Google focused on bringing more student developers into open-source software development.
 - [Girlscript Summer of Code](https://gssoc.girlscript.tech/) - A three-month-long Open-Source Program conducted every summer by the Girlscript Foundation. With constant efforts, participants contribute to numerous projects under the extreme guidance of skilled mentors over these months. With such exposure, students begin to contribute to real-world projects from the comfort of their homes.
-- [Hacktoberfest](https://hacktoberfest.digitalocean.com)
+- [Hacktoberfest](https://hacktoberfest.digitalocean.com) - An annual event hosted every October to encourage people to contribute to open source!
 - [Hyperledger Mentorship Program](https://wiki.hyperledger.org/display/INTERN) - If you’re into the blockchain, this is for you. You can contribute to Hyperledger. This mentorship program allows you to get practical exposure to Hyperledger open source development.You will be allotted mentors who are quite active in the Hyperledger developers community.
 - [LF Networking Mentorship](https://wiki.lfnetworking.org/display/LN/LFN+Mentorship+Program)
 - [Microsoft Reinforcement Learning](https://www.microsoft.com/en-us/research/academic-program/rl-open-source-fest/)