Fix typo: occured -> occurred (#1489366)

Aleksander Machniak

2013-10-04 57b44d2339c4ab0ca07ca2f3884445e5523aa2bb

1
tinyMCE.addI18n('cs.advhr_dlg',{size:"V\u00fd\u0161ka",noshade:"Bez st\u00ednu",width:"\u0160\u00ed\u0159ka",normal:"Norm\u00e1ln\u00ed",widthunits:"Jednotky"});