Minor change in grok_exporter.

roles/update_grok_exporter_config/files/updating_grok_exporter_config.sh

@@ -13,7 +13,7 @@ FOLDERSUPERVISOR="/supervisor"
 for INSTALLDIR in $INSTALLDIRS
 do
 	if ! grep -Fq "$INSTALLDIR$FILESUPERVISORDALL" "$FILE"; then
-		if [ -f "$INSTALLDIR$FOLDERSUPERVISOR" ]; then
+		if [ -d "$INSTALLDIR$FOLDERSUPERVISOR" ]; then
 			sed -i -e '/#to-add-entries/r '$INSTALLERS_DIR'/data/grok_exporter_single_conf.txt' $FILE
 			sed -i '/#to-add-paths/ a \  \-\ \'$INSTALLDIR$FILESUPERVISORDALL $FILE
 		else