add a single empty line between the block comments and the single line comments.

Author: magic-akari

templates/codeonly.tpl

@@ -3,6 +3,7 @@ ${comment.line} @lc app=${app} id=${fid} lang=${lang}
 ${comment.line}
 ${comment.line} [${fid}] ${name}
 ${comment.end}
+
 ${comment.singleLine} @lc code=start
 ${code}
 ${comment.singleLine} @lc code=end

templates/detailed.tpl

@@ -15,6 +15,7 @@ ${comment.line} Testcase Example:  ${testcase}
 ${comment.line}
 {{ desc.forEach(function(x) { }}${comment.line} ${x}
 {{ }) }}${comment.end}
+
 ${comment.singleLine} @lc code=start
 ${code}
 ${comment.singleLine} @lc code=end

test/test_core.js

@@ -159,6 +159,7 @@ describe('core', function() {
         ' *',
         ' * [2] Add Two Numbers',
         ' */',
+        '',
         '// @lc code=start',
         '/**',
         ' * Definition for singly-linked list.',
@@ -196,6 +197,7 @@ describe('core', function() {
         ' *',
         ' * [2] Add Two Numbers',
         ' */',
+        '',
         '// @lc code=start',
         '/**',
         ' * Definition for singly-linked list.',
@@ -250,6 +252,7 @@ describe('core', function() {
         ' * Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)',
         ' * Output: 7 -> 0 -> 8',
         ' */',
+        '',
         '// @lc code=start',
         '/**',
         ' * Definition for singly-linked list.',
@@ -304,6 +307,7 @@ describe('core', function() {
         '# Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)',
         '# Output: 7 -> 0 -> 8',
         '#',
+        '',
         '# @lc code=start',
         '# Definition for singly-linked list.',
         '# class ListNode',