typo fix so that second loop "should" end at 1 (but still doesn't, no…

…w due to rounding)

doc/generic/pgf/text-en/pgfmanual-en-tutorial.tex

@@ -1106,7 +1106,7 @@ \subsection{Repeating Things: For-Loops}
 \begin{codeexample}[]
 \tikz \foreach \x in {-1,-0.5,...,1}
        \draw (\x cm,-1pt) -- (\x cm,1pt);
-\tikz \foreach \x in {-1,-0.2,...,1}
+\tikz \foreach \x in {-1,-0.8,...,1}
        \draw (\x cm,-7pt) -- (\x cm,-5pt);
 \end{codeexample}