PBWiki Title doesn't show correctly

I am a Chinese user whose PBWiki Title (in Chinese) on the browser doesn't show correctly! (See j-lyrics.pbwiki.com/)

I visited other Chinese users' Wiki, finding that their charset in the source code displays as "zh" while mine displays "en," I don't know why. Is there anyway to change the code? or anyway to show the title correctly? Thanks for attention!
 
sad I’m confused
Inappropriate?
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