adding missing close parenthesis

Author: Grant MacGillivray

content/en/docs/concepts/storage/storage-classes.md

@@ -280,7 +280,7 @@ parameters:
 * `iopsPerGB`: only for `io1` volumes. I/O operations per second per GiB. AWS
   volume plugin multiplies this with size of requested volume to compute IOPS
   of the volume and caps it at 20 000 IOPS (maximum supported by AWS, see
-  [AWS docs](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html).
+  [AWS docs](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html).)
   A string is expected here, i.e. `"10"`, not `10`.
 * `fsType`: fsType that is supported by kubernetes. Default: `"ext4"`.
 * `encrypted`: denotes whether the EBS volume should be encrypted or not.