docs: adjust comment w.r.t. recent tests renaming

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --git a/doc/automake.texi b/doc/automake.texi
index d2e3b38..78131a7 100644 (file)
--- a/doc/automake.texi
+++ b/doc/automake.texi
@@ -7972,7 +7972,7 @@ passed to @code{makeinfo} when building @file{.info} files; and
 @samp{$(AM_MAKEINFOHTMLFLAGS)} is used when building @file{.html}
 files.
 
-@c Keep in sync with txinfo21.sh
+@c Keep in sync with txinfo-many-output-formats.sh
 For instance, the following setting can be used to obtain one single
 @file{.html} file per manual, without node separators.
 @example