[Fix] Review and modify the comment.

Author: mumupika

src/content/docs/cpp/comments.mdx …c/content/docs/cpp/language/comments.mdxsrc/content/docs/cpp/comments.mdx renamed to src/content/docs/cpp/language/comments.mdx src/content/docs/cpp/comments.mdx renamed to src/content/docs/cpp/language/comments.mdx

@@ -1,27 +1,35 @@
 ---
 title: Comments
 description: Auto‑generated from cppreference
+cppdoc:
+  keys: ["cpp.lang.comments"]
 ---
 
 import { Desc, DescList, DocLink } from '@components/index';
-
-# Comments
+import { Decl, DeclDoc } from "@components/decl-doc";
 
 Comments serve as a sort of in-code documentation. When inserted into a program, they are effectively ignored by the compiler; they are solely intended to be used as notes by the humans that read source code. Although specific documentation is not part of the C++ standard, several utilities exist that parse comments with different documentation formats.
 
 ## Syntax
 
-#### Block Comment
-Often known as "C-style" or "multi-line" comments.
-
-```
-/* comment */
-```
-#### Single-line Comment
-Often known as "C++-style" or "single-line" comments.
-```
-// comment
-```
+<DeclDoc>
+  <Decl slot="decl">
+    ```cpp
+    /* comment */
+    ```
+  </Decl>
+
+  Often known as "C-style" or "multi-line" comments.
+</DeclDoc>
+
+<DeclDoc>
+  <Decl slot="decl">
+    ```cpp
+    // comment
+    ```
+  </Decl>
+  Often known as "C++-style" or "single-line" comments.
+</DeclDoc>
 
 All comments are removed from the program at <DocLink src="/cpp/language/translation_phases">translation phase 3</DocLink> by replacing each comment with a single whitespace character.