Moved Project Ideas to its own header.

Author: kgodey

content/internships/contents.lr

@@ -16,7 +16,7 @@ CC is participating in [Google Summer of Code](https://summerofcode.withgoogle.c
 **Outreachy**  
 Creative Commons is participating in the [Outreachy](https://www.outreachy.org/) May-August 2020 round. [Here is our community page on the Outreachy website](https://www.outreachy.org/communities/cfp/creative-commons/).
 
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+### Project Ideas
 
 Feel free to take a look at our [Project Ideas](/internships/project-ideas). Please note that these project ideas are shared between all current internship programs.