Fix cut and paste error in script

Make it more generic in the process

Signed-off-by: Michael Neuling <mikey@neuling.org>

scripts/run_test.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 if [ $# -ne 1 ]; then
-	echo "Usage: run_test.sh <test>"
+	echo "Usage: $(basename $0) <test>"
 	exit 1
 fi
 

scripts/run_test_console.sh

@@ -3,7 +3,7 @@
 # Runs a test and checks the console output against known good output
 
 if [ $# -ne 1 ]; then
-	echo "Usage: run_test.sh <test>"
+	echo "Usage: $(basename $0) <test>"
 	exit 1
 fi