Fix error in README

README.mdwn

@@ -90,7 +90,7 @@ optional arguments:
 ### Example usage
 Assuming you want to run the syntax tests and your MiniJava base folder is `~/code/mj` then run
 ```
-mjtest syntax `~/code/mj/run --lextest`
+mjtest syntax ~/code/mj/run --lextest
 ```
 This will…
 - … create reports in a folder named after the current date and time inside the `reports` folder