Thinko repair.
diff --git a/Doc/lib/libdoctest.tex b/Doc/lib/libdoctest.tex
index 6d57f22..c28a31e 100644
--- a/Doc/lib/libdoctest.tex
+++ b/Doc/lib/libdoctest.tex
@@ -315,7 +315,7 @@
\subsection{Option Flags and Directives\label{doctest-options}}
-A number of option flags control various aspects of doctest's comparison
+A number of option flags control various aspects of doctest's
behavior. Symbolic names for the flags are supplied as module constants,
which can be or'ed together and passed to various functions. The names
can also be used in doctest directives (see below).