Numerical response template has markdown init

common/lib/xmodule/xmodule/templates/problem/numericalresponse.yaml

@@ -3,7 +3,19 @@ metadata:
     display_name: Numerical Response
     rerandomize: never
     showanswer: always
-    markdown: 
+    markdown: "A numerical response problem accepts a line of text input from the
+       student, and evaluates the input for correctness based on its
+       numerical value.  
+
+       The answer is correct if it is within a specified numerical tolerance
+       of the expected answer.
+
+       Enter the numerical value of Pi: = 3.14159 +- .02
+       
+       Enter the approximate value of 502*9: = 4518 +- 15%
+    
+       Enter the number of fingers on a human hand: = 5 +- 0
+        "
 data: |
    <problem>
    <p>