Update tutorials/celestia-da.md

Author: jcstein

tutorials/celestia-da.md

@@ -4,7 +4,7 @@
 
 This tutorial serves as a comprehensive guide for deploying your GM world rollup on Celestia's data availability network. From the Rollkit perspective, there's no difference in posting blocks to Celestia's testnets or Mainnet Beta.
 
-Before proceeding, ensure that you have completed the [GM World Rollup](/tutorials/gm-world) tutorial, which covers setting up a local sovereign gm-world rollup and connecting it to a local mock DA node.
+Before proceeding, ensure that you have completed the [GM world rollup](/tutorials/gm-world) tutorial, which covers setting up a local sovereign gm-world rollup and connecting it to a local mock DA node.
 
 ## 🪶 Running a Celestia light node