Minor grammar fix, part two

chapters/annotations.tex

@@ -213,7 +213,7 @@ \subsubsection{Axis Properties}\label{axis-properties}
 Under some circumstances, such as when the axis range does not span even a single order of magnitude, a tool may disregard the preference in order to get useful axis ticks.
 
 \begin{example}
-A \emph{symmetric log} axis scale is sometimes used for axes spanning across several orders of magnitudes of both positive and negative values.
+A \emph{symmetric log} axis scale is sometimes used for axes spanning across several orders of magnitude of both positive and negative values.
 Details vary, but the mapping from value to linear position along axis is some variation of $y \mapsto \operatorname{sign}(y)\, \operatorname{log}(1 + \frac{\abs{y}}{10^{\alpha}})$.
 A tool may implement this as a vendor-specific axis scale:
 \begin{lstlisting}[language=modelica]