fix: replace word-split tags with domain-specific cybersecurity tags

Three SKILL.md files had tags that were simply words split from the
skill name (e.g., "analyzing", "block", "with", "logs") rather than
meaningful discovery keywords. Replace with domain-specific terms that
agents and search tools can actually use for routing.

- analyzing-powershell-script-block-logging: [powershell, script-block-logging, event-id-4104, obfuscation-detection, windows-forensics, endpoint-security]
- analyzing-azure-activity-logs-for-threats: [azure, cloud-security, azure-monitor, kql, threat-hunting, activity-logs]
- analyzing-memory-forensics-with-lime-and-volatility: [memory-forensics, linux-forensics, lime, volatility, incident-response, kernel-modules]

Co-Authored-By: Claude Code <noreply@anthropic.com>

skills/analyzing-powershell-script-block-logging/SKILL.md

@@ -6,10 +6,12 @@ description: Parse Windows PowerShell Script Block Logs (Event ID 4104) from EVT
 domain: cybersecurity
 subdomain: security-operations
 tags:
-- analyzing
 - powershell
-- script
-- block
+- script-block-logging
+- event-id-4104
+- obfuscation-detection
+- windows-forensics
+- endpoint-security
 version: '1.0'
 author: mahipal
 license: Apache-2.0