fix missing space

run_tests

@@ -40,7 +40,7 @@
 if [[ $ok -gt 0 ]];
 then
     echo -e '\033[32mOK:\033[0m'
-    grep--color=always ' OK' $logfile || true
+    grep --color=always ' OK' $logfile || true
 fi
 if [[ $failed -gt 0 ]];
 then