chore: 코드스니펫에 keywords 메타 추가

Author: toothlessdev

.vscode/workspace.code-snippets

@@ -6,8 +6,12 @@
             "title: $1",
             "createdAt: $2",
             "category: $3",
-            "description: $6",
+            "description: $4",
             "comment: true",
+            "head:",
+            "  - - meta",
+            "    - name: keywords",
+            "      content: $5",
             "---",
         ],
     },