[LyX/2.3.x] Improve error msg.

[Pavel Sanda]

commit c2a9f55be8d454e9918e6900b039fd0c37318391
Author: Pavel Sanda <sanda at lyx.org>
Date:   Thu Oct 21 15:17:39 2021 +0200

    Improve error msg.
---
 po/cs.gmo         |  Bin 527388 -> 528906 bytes
 src/VCBackend.cpp |    2 +-
 2 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/po/cs.gmo b/po/cs.gmo
index 24034ad..74a0f7d 100644
Binary files a/po/cs.gmo and b/po/cs.gmo differ
diff --git a/src/VCBackend.cpp b/src/VCBackend.cpp
index 963064c..b5d593f 100644
--- a/src/VCBackend.cpp
+++ b/src/VCBackend.cpp
@@ -62,7 +62,7 @@ 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,