documentation: match frontmatter on docs site .md files

docs/deploy.md

@@ -1,3 +1,8 @@
+---
+sidebar_label: Deploy the QGB contract
+description: Learn how to deploy the QGB smart contract.
+---
+
 # Deploy the QGB contract
 
 <!-- markdownlint-disable MD013 -->

docs/keys.md

@@ -1,3 +1,8 @@
+---
+sidebar_label: Key management
+description: Learn how to manage EVM private keys and P2P identities.
+---
+
 # Key management
 
 <!-- markdownlint-disable MD013 -->

docs/orchestrator.md

@@ -1,3 +1,8 @@
+---
+sidebar_label: QGB Orchestrator
+description: Learn about the QGB Orchestrator.
+---
+
 # QGB Orchestrator
 
 <!-- markdownlint-disable MD013 -->

docs/relayer.md

@@ -1,3 +1,8 @@
+---
+sidebar_label: QGB Relayer
+description: Learn about the QGB Relayer.
+---
+
 # QGB Relayer
 
 <!-- markdownlint-disable MD013 -->