[LyX/master] Improve error msg.

[Pavel Sanda]

commit 985f7c93160de826aa58ee3deb8f459452414669
Author: Pavel Sanda <sanda at lyx.org>
Date:   Thu Oct 21 15:20:28 2021 +0200

    Improve error msg.
---
 src/VCBackend.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/VCBackend.cpp b/src/VCBackend.cpp
index 3e8fc44..d83453a 100644
--- a/src/VCBackend.cpp
+++ b/src/VCBackend.cpp
@@ -61,7 +61,7 @@ int VCS::doVCCommand(string const & cmd, FileName const & path, bool reportError
 	if (ret && reportError) {
 		docstring rcsmsg;
 		if (prefixIs(cmd, "ci "))
-			rcsmsg = "\n" + _("Perhaps the RCS package is not installed on your system?");
+			rcsmsg = "\n" + _("Perhaps the GNU RCS package is not installed on your system?");
 		frontend::Alert::error(_("Revision control error."),
 			bformat(_("Some problem occurred while running the command:\n"
 				  "'%1$s'.") + rcsmsg,