gitignore: testsuite/examples/testreports/ added (fixes https://trac.osgeo.org/grass/ticket/3796) (contributed by pmav99)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@74308 15284696-431f-4ddb-bdfa-cd5b030d7da7

.gitignore

@@ -28,4 +28,5 @@ raster/r.mapcalc/mapcalc.output
 raster/r.mapcalc/mapcalc.tab.c
 raster/r.mapcalc/mapcalc.tab.h
 raster/r.mapcalc/mapcalc.yy.c
+testsuite/examples/testreports/