described return 0. (#32117)

described use of return 0 in function.

guide/english/c/hello-world/index.md

@@ -28,9 +28,9 @@ To write on console you can use the function `printf()` contained in the library
  * The execution of a C program starts from the `main()` function. We write `int` before it to specify that the program returns a integer value.
  * The `printf()` is a library function to send formatted output to the standard output stream, most commoly the screen. In this program, the `printf()` displays `Hello, World!` text on the screen.
  * `\n` is used here to take the cursor to the next line. Hence, if we print anything after this command, it will be printed on a new line.
- * The `return 0;` statement is the "Exit code" of the program. In simple terms, program ends with this statement
+ * The `return 0;` statement is the "Exit code" of the program. In simple terms, the program ends with this statement or it signifies that function does not return any value.
 
- ## Output:
+## Output:
  ```
  Hello, World!
  ```