chore: Update guide titles and fix link errors

Author: daGscheid

docs/02-guides/02-installation/01-use-case-guides/01-staking/00-ethereum/01-ethereum-solo-staking.md

@@ -1,5 +1,3 @@
-
-
 # Ethereum Solo Staking 
 
 ## Step by Step Guide

docs/02-guides/04-operation/deleting-keys.md

@@ -1,6 +1,6 @@
-### Delete Keys
+# Remove Validator Keys
 
-#### Procedure for Secure Key Deletion
+## Procedure for Secure Key Deletion
 
 1. **Delete Keys on Node**: Initiate the deletion process directly on your node.
 2. **Wait and Monitor**: After deletion, wait for two epochs to ensure the keys are completely inactive.

docs/02-guides/04-operation/migrate-keys.md

@@ -1,4 +1,4 @@
-### Migrate Keys
+### Migrate Validator Keys
 
 #### Step-by-Step Guide to Validator Key Migration
 

docs/02-guides/04-operation/updating-node.md

@@ -1,20 +1,20 @@
-### Update a Node
+# Node Update Guide
 
-#### Comprehensive Update Process
+## Comprehensive Update Process
 
-##### Step 1: Compatibility Check
+### Step 1: Compatibility Check
 - **Read Release Notes**: Before proceeding with updates, thoroughly read the release notes for Stereum's latest updates as well as those of any related services to ensure compatibility.
 
-##### Step 2: Execute Update
+### Step 2: Execute Update
 - **Launch Stereum Updater**: Start the Stereum Launcher, which will automatically check for and apply available updates.
 - **Check Update Panel**: Visit the Update Panel to look for updates for both the Stereum Node and its services.
 
-##### Step 3: Validation of Update
+### Step 3: Validation of Update
 - **Review Logs**: After updating, inspect the logs for the Execution, Consensus, and Validator Clients to check for any issues.
 - **Grafana Monitoring**: Use Grafana to monitor the performance and stability of your node post-update.
 - **Stereum Control Tab**: Confirm the functionality of all systems via the Stereum control tab.
 
-##### Step 4: Staking Node Key Monitoring
+### Step 4: Staking Node Key Monitoring
 - **Verify Key Reloading**:
   - **Doppelgänger Detection**: Ensure that your clients' doppelgänger detection systems are functioning to avoid penalties.
   - **Key Count and Integrity**: Confirm that the correct number of keys and the specific keys are reloaded and operational.