Apply suggestions from code review

Co-authored-by: James George <[email protected]>

Author: sy-records

README.md

@@ -89,7 +89,7 @@ docsify serve <path> [--open false] [--port 3000]
   - Default: `3000`
   - Description: Choose a listen port, defaults to `3000`.
 
-### `gen` command
+### `generate` command
 
 Docsify's generators.
 

lib/commands/generate.js

@@ -17,16 +17,16 @@ module.exports = function (path = '', sidebar) {
 
       if (!exists(sidebarPath)) {
         genSidebar(cwdPath, sidebarPath)
-        console.log(chalk.green(`Generate sidebar file '${sidebar}' success.`))
+        console.log(chalk.green(`Successfully generated the sidebar file '${sidebar}'.`))
         return true
       }
 
-      console.log(chalk.red(`${sidebarPath}`) + ' already exists.')
+      console.error(chalk.red(`${sidebarPath}`) + ' already exists.')
       return false
     }
   }
 
-  console.log(chalk.red(`${cwdPath}`) + ' directory does not exist.')
+  console.error(chalk.red(`${cwdPath}`) + ' directory does not exist.')
 }
 
 function genSidebar(cwdPath, sidebarPath) {
@@ -61,7 +61,7 @@ function genSidebar(cwdPath, sidebarPath) {
   })
   fs.writeFile(sidebarPath, tree, 'utf8', err => {
     if (err) {
-      console.log(chalk.red(`Generate sidebar file error, message: ${err.message}`))
+      console.error(chalk.red(`Couldn't generate the sidebar file, error: ${err.message}`))
     }
   })
 }