docs: new timezone picker (#1152)

Author: ItsNiceCraft

_config.yml

@@ -12,7 +12,7 @@ baseurl: ""
 # otherwise, the layout language will use the default value of 'en'.
 lang: en
 
-# Change to your timezone › http://www.timezoneconverter.com/cgi-bin/findzone/findzone
+# Change to your timezone › https://kevinnovak.github.io/Time-Zone-Picker
 timezone: Asia/Shanghai
 
 # jekyll-seo-tag settings › https://github.com/jekyll/jekyll-seo-tag/blob/master/docs/usage.md