Fix the document about the special comments of Haskell

I thought that we want to write like `{-# LANGUAGE ... #-}`, but
newlines are ugly.

Author: kmyk

.verify-helper/docs/static/document.ja.md

@@ -12,7 +12,7 @@
 | C# script | `.csx` | `.test.csx` | `// verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :heavy_check_mark: | [segment_tree.range_sum_query.test.csx](https://github.com/online-judge-tools/verification-helper/blob/master/examples/csharpscript/segment_tree.range_sum_query.test.csx) |
 | Nim | `.nim` | `_test.nim` | `# verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :heavy_check_mark: | [union_find_tree_yosupo_test.nim](https://github.com/online-judge-tools/verification-helper/blob/master/examples/nim/union_find_tree_yosupo_test.nim) |
 | Python 3 | `.py` | `.test.py` | `# verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :heavy_check_mark: | [union_find_yosupo.test.py](https://github.com/online-judge-tools/verification-helper/blob/master/examples/python/union_find_yosupo.test.py) |
-| Haskell | `.hs` | `.test.hs` | `{- verification-helper: [KEY] [VALUE]` (newline) `-}` | :heavy_check_mark: / :x: / :warning: | [HelloWorld.test.hs](https://github.com/online-judge-tools/verification-helper/blob/master/Examples2/Haskell/HelloWorld.test.hs) |
+| Haskell | `.hs` | `.test.hs` | `-- verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :warning: | [HelloWorld.test.hs](https://github.com/online-judge-tools/verification-helper/blob/master/Examples2/Haskell/HelloWorld.test.hs) |
 | Ruby | `.rb` | `.test.rb` | `# verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :warning: | [hello_world.test.rb](https://github.com/online-judge-tools/verification-helper/blob/master/examples/ruby/hello_world.test.rb) |
 | Go | `.go` | `.test.go` | `// verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :warning: | [helloworld.test.go](https://github.com/online-judge-tools/verification-helper/blob/master/examples/go/helloworld.test.go) |
 | Java | `.java` | `_test.java` | `// verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :warning: | [HelloWorld_test.java](https://github.com/online-judge-tools/verification-helper/blob/master/examples/java/HelloWorld_test.java) |

.verify-helper/docs/static/document.md

@@ -12,7 +12,7 @@ Summary:
 | C# script | `.csx` | `.test.csx` | `// verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :heavy_check_mark: | [segment_tree.range_sum_query.test.csx](https://github.com/online-judge-tools/verification-helper/blob/master/examples/csharpscript/segment_tree.range_sum_query.test.csx) |
 | Nim | `.nim` | `_test.nim` | `# verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :heavy_check_mark: | [union_find_tree_yosupo_test.nim](https://github.com/online-judge-tools/verification-helper/blob/master/examples/nim/union_find_tree_yosupo_test.nim) |
 | Python 3 | `.py` | `.test.py` | `# verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :heavy_check_mark: | [union_find_yosupo.test.py](https://github.com/online-judge-tools/verification-helper/blob/master/examples/python/union_find_yosupo.test.py) |
-| Haskell | `.hs` | `.test.hs` | `{- verification-helper: [KEY] [VALUE]` (newline) `-}` | :heavy_check_mark: / :x: / :warning: | [HelloWorld.test.hs](https://github.com/online-judge-tools/verification-helper/blob/master/Examples2/Haskell/HelloWorld.test.hs) |
+| Haskell | `.hs` | `.test.hs` | `-- verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :warning: | [HelloWorld.test.hs](https://github.com/online-judge-tools/verification-helper/blob/master/Examples2/Haskell/HelloWorld.test.hs) |
 | Ruby | `.rb` | `.test.rb` | `# verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :warning: | [hello_world.test.rb](https://github.com/online-judge-tools/verification-helper/blob/master/examples/ruby/hello_world.test.rb) |
 | Go | `.go` | `.test.go` | `// verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :warning: | [helloworld.test.go](https://github.com/online-judge-tools/verification-helper/blob/master/examples/go/helloworld.test.go) |
 | Java | `.java` | `_test.java` | `// verification-helper: [KEY] [VALUE]` | :heavy_check_mark: / :x: / :warning: | [HelloWorld_test.java](https://github.com/online-judge-tools/verification-helper/blob/master/examples/java/HelloWorld_test.java) |