Add word-wrap in comment body

resource/css/_comment.scss

@@ -55,6 +55,7 @@
         }
         .page-comment-body {
           padding: 8px 0;
+          word-wrap: break-word;
         }
       }
     }

resource/css/_wiki.scss

@@ -104,7 +104,7 @@ div.body {
     background: #444;
     color: #f0f0f0;
     font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
-    word-break: break-word;
+    word-wrap: break-word;
   }
 
   img {