missing word (should backport - is release23-maint still locked?)

Doc/lib/libcfgparser.tex

@@ -57,7 +57,7 @@ does not support the magical interpolation behavior.
 
 \begin{classdesc}{ConfigParser}{\optional{defaults}}
 Derived class of \class{RawConfigParser} that implements the magical
-interpolation feature and adds optional arguments the \method{get()}
+interpolation feature and adds optional arguments to the \method{get()}
 and \method{items()} methods.  The values in \var{defaults} must be
 appropriate for the \samp{\%()s} string interpolation.  Note that
 \var{__name__} is an intrinsic default; its value is the section name,