Spelling correction in README.md
Spelling correction in README.md

small spelling correction.

MichMich/MagicMirror,heyheyhexi/MagicMirror,roramirez/MagicMirror,Tyvonne/MagicMirror,n8many/MagicMirror,heyheyhexi/MagicMirror,heyheyhexi/MagicMirror,n8many/MagicMirror,n8many/MagicMirror,MichMich/MagicMirror,MichMich/MagicMirror,roramirez/MagicMirror,Tyvonne/MagicMirror,Tyvonne/MagicMirror,MichMich/MagicMirror,roramirez/MagicMirror,Tyvonne/MagicMirror,roramirez/MagicMirror,heyheyhexi/MagicMirror,n8many/MagicMirror,n8many/MagicMirror