fix: protocol links, icon (#447)

Author: sarahschwartz

content/20.zksync-protocol/00.index.md

@@ -43,7 +43,7 @@ on ZKsync.
   ::card
   ---
   title: Contracts
-  icon: i-emojione-monotone-yin-yang
+  icon: i-heroicons-document-magnifying-glass-16-solid
   to: /zksync-protocol/contracts
   ---
   Understand the contracts managing ZKsync protocol on L1 and L2
@@ -60,23 +60,23 @@ on ZKsync.
   ---
   title: Compilers
   icon: i-heroicons-cog
-  to: /zksync-protocol/compiler
+  to: /zksync-protocol/compiler/toolchain
   ---
   Introduce yourself to the compilers for the ZKsync Virtual Machine.
   ::
   ::card
   ---
   title: Security
   icon: i-heroicons-shield-check
-  to: /zksync-protocol/security
+  to: /zksync-protocol/security/audits
   ---
   Understand the ZKsync security.
   ::
   ::card
   ---
   title: Ethereum Differences
   icon: i-heroicons-adjustments-horizontal-16-solid
-  to: /zksync-protocol/differences
+  to: /zksync-protocol/differences/evm-instructions
   ---
   Learn about the key distinctions between Ethereum Layer 1 and ZKsync.
   ::

nuxt.config.ts

@@ -111,6 +111,7 @@ export default defineNuxtConfig({
         'heroicons:book-open-solid',
         'heroicons:square-3-stack-3d-16-solid',
         'heroicons:question-mark-circle',
+        'heroicons:document-magnifying-glass-16-solid',
         'vscode-icons:file-type-bun',
         'vscode-icons:file-type-npm',
         'vscode-icons:file-type-pnpm',