Put an empty line [ci skip]

hash.c

@@ -6220,6 +6220,7 @@ Init_Hash(void)
      * - When you get the value for a name in ENV, the value is retrieved from among the current environment variables.
      * - When you create or set a name-value pair in ENV, the name and value are immediately set in the environment variables.
      * - When you delete a name-value pair in ENV, it is immediately deleted from the environment variables.
+     *
      * === Names and Values
      * Generally speaking, each name or value is a String.
      *
@@ -6231,7 +6232,7 @@ Init_Hash(void)
      *   - Be the empty string.
      *   - Contain character <code>=</code> or the NUL character (<code>"\0"</code>).
      *   - Have an ASCII-incompatible encoding (e.g., UTF-16LE, ISO-2022-JP).
-
+     *
      * === About Ordering
      * ENV presents its content in the order found
      * in the operating system's environment variables.