Fix pgfmathless documentation #1040

Signed-off-by: Henri Menke <henri@henrimenke.de>

doc/generic/pgf/text-en/pgfmanual-en-math-parsing.tex

@@ -1082,7 +1082,7 @@ \subsubsection{Comparison and logical functions}
     This returns |1| if $\mvar{x}<\mvar{y}$ and |0| otherwise.
     %
 \begin{codeexample}[]
-\pgfmathparse{greater(20,25)} \pgfmathresult
+\pgfmathparse{less(20,25)} \pgfmathresult
 \end{codeexample}
     %
 \end{math-function}