fix(build): update synopsis extraction regex to handle language identifiers

Fix the extract_synopsis() regex in build-website.py to properly capture
synopsis content when code blocks have language specifiers (e.g., ```text).

The previous regex captured the language identifier instead of the actual
synopsis line. The new regex skips optional language identifiers and captures
the first content line.

This fixes the incorrect 'text' placeholder values for security plugin commands
in docs/data.json.

Fixes:
- image-grades synopsis: now '/security:image-grades <config.yaml> [--grade <grades>] [--email]'
- set-image-grade-tool-path synopsis: now '/security:set-image-grade-tool-path <path>'

Resolves CodeRabbit critical issue in docs/data.json.

Author: rafaelvzago

docs/data.json

@@ -291,13 +291,13 @@
         {
           "name": "image-grades",
           "description": "Generate container vulnerability grade report using container-grade-reporter",
-          "synopsis": "text",
+          "synopsis": "/security:image-grades <config.yaml> [--grade <grades>] [--email]",
           "argument_hint": "<config.yaml> [--grade <grades>] [--email]"
         },
         {
           "name": "set-image-grade-tool-path",
           "description": "Configure the path to container-grade-reporter tool",
-          "synopsis": "text",
+          "synopsis": "/security:set-image-grade-tool-path <path>",
           "argument_hint": "<path>"
         }
       ],

scripts/build-website.py

@@ -25,7 +25,8 @@ def parse_frontmatter(content: str) -> Dict[str, str]:
 
 def extract_synopsis(content: str) -> str:
     """Extract synopsis from command markdown"""
-    match = re.search(r'## Synopsis\s*```\s*([^\n]+)', content, re.MULTILINE)
+    # Match Synopsis header, optional language identifier, then capture the next non-empty line
+    match = re.search(r'## Synopsis\s*```(?:\w+)?\s*\n([^\n]+)', content, re.MULTILINE)
     if match:
         return match.group(1).strip()
     return ""