update emoji when notify to slack

lib/util/slack.js

@@ -79,7 +79,7 @@ module.exports = function(crowi) {
       var value = line.value.replace(/\r\n|\r/g, '\n');
       /* eslint-enable */
       if (line.added) {
-        diffText += `:pencil2: ...\n${line.value}`;
+        diffText += `${line.value} ... :lower_left_fountain_pen:`;
       }
       else if (line.removed) {
         // diffText += '-' + line.value.replace(/(.+)?\n/g, '- $1\n');
@@ -179,10 +179,10 @@ module.exports = function(crowi) {
 
     const pageUrl = `<${url}${path}|${path}>`;
     if (updateType == 'create') {
-      text = `:white_check_mark: ${user.username} created a new page! ${pageUrl}`;
+      text = `:rocket: ${user.username} created a new page! ${pageUrl}`;
     }
     else {
-      text = `:up: ${user.username} updated ${pageUrl}`;
+      text = `:heavy_check_mark: ${user.username} updated ${pageUrl}`;
     }
 
     return text;