fix(website): remove stale skill-creator doc and fix broken import paths

skill-creator was removed from the plugin in ed1c0cc but its doc page
and all references to it were left behind, breaking the build.
Also fix glab.mdx raw-loader path (glab-skill/ -> glab/).

Author: NikiforovAll

website/docs/component-reference/skills/glab.mdx

@@ -3,7 +3,7 @@ title: "glab"
 sidebar_position: 9
 ---
 
-import GlabSkillSource from '!!raw-loader!../../../../plugins/handbook-glab/skills/glab-skill/SKILL.md'
+import GlabSkillSource from '!!raw-loader!../../../../plugins/handbook-glab/skills/glab/SKILL.md'
 import CodeBlock from '@theme/CodeBlock';
 
 # Use `glab` skill

website/docs/component-reference/skills/skill-creator.mdx

@@ -181,4 +181,3 @@ Effective use of this skill shows:
 
 ## Related
 
-- [skill-creator](./skill-creator.mdx) - Create new skills and workflows to extend Claude's capabilities

website/docs/component-reference/skills/structured-plan-mode.mdx

@@ -77,35 +77,6 @@ Not every task needs to become a skill or command. Look for these signals:
 
 One of the fastest ways to evolve your setup is using skills - reusable components that encapsulate specific functionality.
 
-### The `skill-creator` Skill
-
-The handbook plugin includes [`skill-creator`](/component-reference/skills/skill-creator), a skill that helps you design and implement new skills following Anthropic's best practices.
-
-**Benefits:**
-- **Rapid Development**: Quickly scaffold well-structured skills
-- **Best Practices**: Automatically incorporates Anthropic's recommendations
-- **Consistent Quality**: Ensures all your skills follow proven patterns
-- **Learning Tool**: See examples of effective skill design
-
-**Usage Example:**
-
-```
-You: "I keep debugging database connection issues. Help me create
-     a skill for systematic database troubleshooting."
-
-Claude: [Uses skill-creator to design a comprehensive database
-         debugging skill with progressive disclosure, proper
-         tool coordination, and clear decision trees]
-```
-
-The `skill-creator` skill handles:
-- Structuring your skill with appropriate frontmatter
-- Organizing instructions for progressive disclosure
-- Suggesting relevant bundled resources (scripts, references)
-- Applying tool access restrictions when appropriate
-
-See the [skill-creator reference](/component-reference/skills/skill-creator) for complete details.
-
 For more on skills, see [Use Agent Skills](./agent-skills)
 
 ## Best Practices