Write "conversion calls" with space

chapters/annotations.tex

@@ -1672,7 +1672,7 @@ \subsubsection{Conversion rules}\label{conversion-rules}
 These functions can be called with literal strings or array of strings
 and vectorize according to \cref{scalar-functions-applied-to-array-arguments}.
 
-All of these convert-functions only use inheritance among user models, and not in the library that is used for the conversion -- thus conversions of base classes will require multiple conversion-calls; this ensures that the conversion is independent of the new library structure.
+All of these convert-functions only use inheritance among user models, and not in the library that is used for the conversion -- thus conversions of base classes will require multiple conversion calls; this ensures that the conversion is independent of the new library structure.
 The name of the class used as argument to \lstinline!convertElement! and \lstinline!convertModifiers! is similarly the old name of the class, i.e.\ the name before it is possibly converted by \lstinline!convertClass!.
 
 \begin{nonnormative}