docs: Update link format

License: MIT
Signed-off-by: Molly Mackinlay <molly@protocol.ai>

Author: momack2

CONTRIBUTING.md

@@ -1,6 +1,6 @@
-IPFS as a project, including go-ipfs and all of its modules, follows the (standard IPFS Community contributing guidelines)[https://github.com/ipfs/community/blob/master/CONTRIBUTING.md].
+IPFS as a project, including go-ipfs and all of its modules, follows the [standard IPFS Community contributing guidelines](https://github.com/ipfs/community/blob/master/CONTRIBUTING.md).
 
-We also adhere to the (GO IPFS Community contributing guidelines)[https://github.com/ipfs/community/blob/master/CONTRIBUTING_GO.md] which provide additional information of how to collaborate and contribute in the Go implementation of IPFS.
+We also adhere to the [GO IPFS Community contributing guidelines](https://github.com/ipfs/community/blob/master/CONTRIBUTING_GO.md) which provide additional information of how to collaborate and contribute in the Go implementation of IPFS.
 
 We appreciate your time and attention for going over these. Please open an issue on ipfs/community if you have any questions.