[LyX/master] Fix a Makfile.am typo preventing "make lyxdist"

[Scott Kostyshak]

commit 22104ac51831a6e489577312bd33089b1b6d1842
Author: Scott Kostyshak <skost...@lyx.org>
Date:   Sat Nov 7 01:48:43 2015 -0500

    Fix a Makfile.am typo preventing "make lyxdist"
    
    Thanks to Vincent.

diff --git a/src/tex2lyx/Makefile.am b/src/tex2lyx/Makefile.am
index 3471d01..d5ce4cb 100644
--- a/src/tex2lyx/Makefile.am
+++ b/src/tex2lyx/Makefile.am
@@ -33,7 +33,7 @@ TEST_FILES = \
        test/foo.eps \
        test/foo.png \
        test/test-insets.tex \
-       test/test-insets-basic.lyx \
+       test/test-insets-basic.tex \
        test/test.ltx \
        test/test-memoir.tex \
        test/test-modules.tex \