fixed man page, status bar displays EOF instead of "broken pipe"

dwm.1

@@ -122,7 +122,7 @@ dwm is customized by creating a custom config.h and (re)compiling the source
 code. This keeps it fast, secure and simple.
 .SH CAVEATS
 The status bar may display
-.BR "broken pipe"
+.BR "EOF"
 when dwm has been started by an X session manager like
 .BR xdm (1),
 because those close standard output before executing dwm.