Remove excessive indexing of 'inverse' annotation

chapters/functions.tex

@@ -1277,7 +1277,7 @@ \section{Derivatives and Inverses of Functions}\label{derivatives-and-inverses-o
    IDENT "=" type-specifier function-call-args"
 \end{lstlisting}\end{synopsis}
 \begin{semantics}
-A function with one output formal parameter may have one or more \fmtannotationindex{inverse} annotations to define inverses of this function.
+A function with one output formal parameter may have one or more \lstinline!inverse! annotations to define inverses of this function.
 
 For details abouts using the \lstinline!inverse! annotation, see \cref{using-the-inverse-annotation}.
 \end{semantics}