Remove unnecessary comma.

diff --git a/Doc/lib/libcmath.tex b/Doc/lib/libcmath.tex
index 378615b5b117d60395691146aa594c8d0fa6a21d..3a11870d5e25efe588e376ead6e955095440ee7b 100644 (file)
--- a/Doc/lib/libcmath.tex
+++ b/Doc/lib/libcmath.tex
@@ -83,7 +83,7 @@ The mathematical constant \emph{e}, as a real.
 
 Note that the selection of functions is similar, but not identical, to
 that in module \refmodule{math}\refbimodindex{math}.  The reason for having
-two modules is, that some users aren't interested in complex numbers,
+two modules is that some users aren't interested in complex numbers,
 and perhaps don't even know what they are.  They would rather have
 \code{math.sqrt(-1)} raise an exception than return a complex number.
 Also note that the functions defined in \module{cmath} always return a