fixed typo

data/yad.1

@@ -909,7 +909,7 @@ Set the font for printing text. \fIFONTNAME\fP is a string with font representat
 .PP
 When the \-\-progress option is used, yad reads lines of progress data from stdin.
 When the lines begin with \fI#\fP the text after \fI#\fP is displayed in the progress
-bar label. Numeric values treats like a persents for progress bar.
+bar label. Numeric values treats like a percents for progress bar.
 .TP
 .B \-\-bar=\fILABEL[:TYPE]\fP
 Add progress bar. \fILABEL\fP is a text label for progress bar. \fITYPE\fP is a progress bar type.