cyclic graph: removed trailing spaces

tikz/cyclic-graph/cyclic-graph.tex

@@ -1,9 +1,9 @@
 \documentclass{article}
 \usepackage[pdftex,active,tightpage]{preview}
 \setlength\PreviewBorder{2mm}
- 
+
 \usepackage{tikz}
-\usetikzlibrary{arrows,positioning, calc} 
+\usetikzlibrary{arrows,positioning, calc}
 \tikzstyle{vertex}=[draw,fill=black!15,circle,minimum size=20pt,inner sep=0pt]
 \tikzstyle{selected edge} = [draw,line width=5pt,-,red!50]