Update README.md

README.md

@@ -16,15 +16,15 @@ Casimir is an all-in-one platform that allows users to trade, stake and track th
 
 Casimir is an early work-in-progress – we will share more of the codebase shortly. In the meantime, we linked a few internal design and development resources below to show what's coming. Feel free to [join our discord](https://discord.com/invite/Vy2b3gSZx8) if you want to say hello and discuss the project.
 
-#### Design
+### Design
 
 Visit the design walk-through @ [🎨 Casimir Figma](https://www.figma.com/proto/nJmTNPoWNuhEX0lS1FIIPQ/Casimir?node-id=427%3A29434&scaling=min-zoom&starting-point-node-id=427%3A29490) (screenshot below).
 
 | [![Design walk-through](https://user-images.githubusercontent.com/32200924/169935678-7695b4dd-b186-459c-9823-7bdce8cc7ebb.png)](https://www.figma.com/proto/nJmTNPoWNuhEX0lS1FIIPQ/Casimir?node-id=427%3A29434&scaling=min-zoom&starting-point-node-id=427%3A29490) |
 | :--: |
 | Walk-through screenshot – click to launch the full view in Figma |
 
-#### Development
+### Development
 
 See the supporting infrastructure and contracts @ [💎 Ethereum Stack](https://github.com/consensusnetworks/ethereum-stack) and [🪐 IoTeX Stack](https://github.com/consensusnetworks/iotex-stack) (more networks to come).