another link-breaking trailing slash

episodes/02-project-planning.md

@@ -141,7 +141,7 @@ If you have a local high performance computing center or data storage facility o
 
 If you do not have access to these resources, you can back up on hard drives. Have two backups, and keep the hard drives in different physical locations.
 
-You can also use resources like [Amazon S3](https://aws.amazon.com/s3/),  [Microsoft Azure](https://azure.microsoft.com/en-us/pricing/details/storage/blobs/),  [Google Cloud](https://cloud.google.com/storage/) or others for cloud storage. The [open science framework](https://osf.io) is a free option for storing files up to 5 GB. See more in the lesson ["Introduction to Cloud Computing for Genomics"](https://www.datacarpentry.org/cloud-genomics/04-which-cloud/).
+You can also use resources like [Amazon S3](https://aws.amazon.com/s3/),  [Microsoft Azure](https://azure.microsoft.com/en-us/pricing/details/storage/blobs/),  [Google Cloud](https://cloud.google.com/storage/) or others for cloud storage. The [open science framework](https://osf.io) is a free option for storing files up to 5 GB. See more in the lesson ["Introduction to Cloud Computing for Genomics"](https://www.datacarpentry.org/cloud-genomics/04-which-cloud).
 
 ## Summary