indicate - means stdin closing #156626 Daniel

* doc/xmllint.1 doc/xmllint.xml: indicate - means stdin closing #156626
Daniel
diff --git a/doc/xmllint.1 b/doc/xmllint.1
index 7d2a513..3875961 100644
--- a/doc/xmllint.1
+++ b/doc/xmllint.1
@@ -31,7 +31,7 @@
 .SH "INTRODUCTION"
 
 .PP
-The xmllint program parses one or more XML files, specified on the command line as \fIxmlfile\fR\&. It prints various types of output, depending upon the options selected\&. It is useful for detecting errors both in XML code and in the XML parser itself\&.
+The xmllint program parses one or more XML files, specified on the command line as \fIxmlfile\fR (or the standard input if the filename provided is \- )\&. It prints various types of output, depending upon the options selected\&. It is useful for detecting errors both in XML code and in the XML parser itself\&.
 
 .PP
 It is included in libxml2\&.