add a space

README_new_book.rst

@@ -117,7 +117,7 @@ you set when you started web2py.
 2. Now add your course to the ``courses`` database table. Click the ``[insert new courses]`` link. Enter
 <project_name> in the course_name field, and choose a start date for the course (in the format YYYY-MM-DD).
 Go back to http://127.0.0.1:8000/runestone/appadmin and click ``db.courses``. Note the ID number of your newly
-generated course (under the ``course.id`` column).You will need the ID in the next step.
+generated course (under the ``course.id`` column). You will need the ID in the next step.
 
 3. Now you need to set your web2py account to be the instructor for your new course. Go back to
 http://127.0.0.1:8000/runestone/appadmin and click the ``[insert new course_instructor]`` link. Type the ID number