[LyX/master] Fix reference to subequation documentation, #12316

[Scott Kostyshak]

commit 76a40d2af532fda223f53aceb4f9f155cbebfbda
Author: Scott Kostyshak <skostysh at lyx.org>
Date:   Tue Jun 22 21:18:18 2021 -0400

    Fix reference to subequation documentation, #12316
    
    The example file was incorporated into the Math manual at 3aa01442.
---
 lib/layouts/subequations.module |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/layouts/subequations.module b/lib/layouts/subequations.module
index 35a84cd..00a96c2 100644
--- a/lib/layouts/subequations.module
+++ b/lib/layouts/subequations.module
@@ -1,7 +1,7 @@
 #\DeclareLyXModule{Subequations}
 #\DeclareCategory{Maths}
 #DescriptionBegin
-#Provide a straightforward way to segregate subequations in LyX. See the subequations.lyx example file.
+#Provide a straightforward way to segregate subequations in LyX. See the Math manual.
 #DescriptionEnd
 
 # Author: Joel A. Kulesza (jkulesza at gmail.com)