Keep format consistence of collMod-usePowerOf2Sizes

Author: gianpaj

source/reference/command/collMod.txt

@@ -41,11 +41,11 @@ collMod
       .. example::
 
          To enable :collflag:`usePowerOf2Sizes` on the collection
-         named ``sensor_readings``, use the following operation:
+         named ``products``, use the following operation:
 
          .. code-block:: javascript
 
-            db.runCommand({collMod: "sensor_readings", usePowerOf2Sizes:true })
+            db.runCommand( {collMod: "products", usePowerOf2Sizes : true })
 
          To disable :collflag:`usePowerOf2Sizes` on the collection
          ``products``, use the following operation: