file highlighting: add PSD graphical format.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

misc/filehighlight.ini

@@ -37,7 +37,7 @@
     extensions=3gp;aac;ac3;ape;asf;avi;dts;flac;flv;it;m3u;m4a;m4v;med;mid;midi;mkv;mod;mol;mov;mp2;mp3;mp4;mpeg;mpg;mpl;ogg;ogv;opus;s3m;ts;umx;vob;wav;webm;wma;wmv;xm
 
 [graph]
-    extensions=ai;avif;bmp;cdr;eps;gif;ico;jp2;jpeg;jpg;jxl;heic;heif;omf;pcx;pic;png;psb;rle;svg;tif;tiff;webp;wmf;xbm;xcf;xpm
+    extensions=ai;avif;bmp;cdr;eps;gif;ico;jp2;jpeg;jpg;jxl;heic;heif;omf;pcx;pic;png;psb;psd;rle;svg;tif;tiff;webp;wmf;xbm;xcf;xpm
 
 [database]
     extensions=cdx;dat;db;dbf;dbi;dbx;fox;mdb;mdn;mdx;msql;mssql;pgsql;sql;ssql