Fine tune a word.
diff --git a/Doc/lib/libdoctest.tex b/Doc/lib/libdoctest.tex
index c28a31e..eedb44d 100644
--- a/Doc/lib/libdoctest.tex
+++ b/Doc/lib/libdoctest.tex
@@ -365,7 +365,7 @@
     is prone to in regular expressions.
 \end{datadesc}
 
-The second group of options controls how test failures are displayed:
+The second group of options controls how test failures are reported:
 
 \begin{datadesc}{REPORT_UDIFF}
     When specified, failures that involve multi-line expected and