stack nav refactor

Author: LandauRaz

components/Starknet/modules/architecture-and-concepts/nav.adoc

@@ -11,12 +11,9 @@
     ** xref:network-architecture/starknet-state.adoc[State]
     ** xref:economics-of-starknet.adoc[Tokenomics]
 * Stack
-    ** https://www.cairo-lang.org/[Cairo ↗^]
+    ** https://book.cairo-lang.org/[Cairo ↗^]
     ** xref:smart-contracts/cairo-and-sierra.adoc[]
-    ** https://book.cairo-lang.org/ch100-00-introduction-to-smart-contracts.html[Smart contracts ↗^]
-    ** https://starkware.co/blog/joining-forces-sharp/[SHARP ↗^]
+    ** xref:sharp.adoc[SHARP]
     ** xref:network-architecture/os.adoc[SNOS]
     ** xref:starkgate:architecture.adoc[]
-    ** https://starkware.co/blog/open-sourcing-the-battle-tested-stone-prover/[Stone ↗^]
-    ** https://starkware.co/blog/stwo-prover-the-next-gen-of-stark-scaling-is-here/[Stwo ↗^]
-    ** https://docs.openzeppelin.com/contracts-cairo/0.12.0/udc[Universal Deployer ↗^]
+    ** https://docs.starknet.io/stwo-book/[Stwo ↗^]