Add short intro to GSoC and fix grammar issues.

Author: yawen-guan

_posts/2023-01-23-gsoc-2023.md

@@ -2,11 +2,11 @@
 category: blog-detail
 post-type: blog
 by: Scala Center
-title: "Calls for Scala GSoC 2023 projects!"
+title: "Call for Scala GSoC 2023 projects!"
 ---
 
-Calls for open source Scala projects for [Google Summer of Code 2023](https://summerofcode.withgoogle.com/)!
+Call for open source Scala projects for [Google Summer of Code 2023](https://summerofcode.withgoogle.com/)!
 
-After [the success of last year's edition](https://scala-lang.org/blog/2022/11/15/gsoc-report.html), the Scala Center is applying to participate GSoC 2023. We are currently reaching out to mentors to assemble a Project List for Scala GSoC 2023. This is a great opportunity for open source Scala project maintainers to get some fresh hands on their projects and help out new contributors at the very beginning of their Scala career!
+GSoC is an online mentorship program that matches beginner contributors to open source software development with mentors. After [the success of last year's edition](https://scala-lang.org/blog/2022/11/15/gsoc-report.html), the Scala Center is applying to participate in GSoC 2023. We are currently reaching out to mentors to assemble a Project List for Scala GSoC 2023. This is a great opportunity for open source Scala project maintainers to get some fresh hands on their projects and help out new contributors at the very beginning of their Scala career!
 
-If you maintain an open source Scala project and you would like to mentor a student, please get in touch with us at [[email protected]](mailto:[email protected]) by the end of January 27th(Friday). We can't wait to hear from you!
+If you maintain an open source Scala project and you would like to mentor a student, please get in touch with us at [[email protected]](mailto:[email protected]) by the end of January 27th (Friday). We can't wait to hear from you!