fix dead link on Student expecations page

Author: hugosolar

content/gsoc-2019/student-expectations/contents.lr

@@ -9,7 +9,7 @@ Here's what we expect of students that Creative Commons is mentoring.
 #### During the application process
 
 * Read the [official GSoC student guide](https://google.github.io/gsocguides/student/).
-* Review our [Project Ideas](/gsoc-2019/project-idea/all) and ask questions about projects you're potentially interested in on our `#cc-gsoc` Slack channel or developer mailing list.
+* Review our [Project Ideas](/gsoc-2019/project-ideas/all) and ask questions about projects you're potentially interested in on our `#cc-gsoc` Slack channel or developer mailing list.
 * Once you've decided on a project, follow our [Application Instructions](/gsoc-2019/application-instructions) to write a draft proposal.
 * Get feedback from the primary mentor associated with the project you're proposing before you submit a final application.
 * If you're proposing a project that's not on our official ideas list, please talk to our mentors to see if there is anyone interested in mentoring that project before you put any work into the proposal.