Add link to Yorick's NUC stabilization guide to external resources

Author: CoeJoder

src/content/docs/reference/external-resources.mdx

@@ -9,3 +9,6 @@ https://docs.ethstaker.org/
 
 #### On Hardware Requirements For Validators
 https://hackmd.io/@kevaundray/S1hUQuV4Jx
+
+#### Stabilize an Asus or Intel NUC for 24/7 server operations
+https://gist.github.com/yorickdowne/ff6b611a2d49855827dafdbfd2546abe