updated ibmmq README

ibmmq/README.md

@@ -226,7 +226,7 @@ Field Name | Type  | Description | Applicability [default] | Constraints
 ---|:---:|---|:---|:---
 <a name="messageBindingObjectType"></a>`type` | string |  The type of the message. | OPTIONAL [`string`] | MUST be either `string`, `jms` or `binary`
 <a name="messageBindingObjectHeaders"></a>`headers` | string | Defines the IBM MQ message headers to include with this message. More than one header can be specified as a comma separated list. Supporting information on IBM MQ message formats can be found on this [page](https://www.ibm.com/support/knowledgecenter/SSFKSJ_latest/com.ibm.mq.ref.dev.doc/q097520_.html) in the IBM MQ Knowledge Center. | OPTIONAL if `type` = `binary` | `headers` MUST NOT be specified if `type` = `string` or `jms`
-<a name="messageBindingObjectDescription"></a>`description` | string<sup>1</sub> | Provides additional information for application developers: describes the message type or format. | OPTIONAL | - 
+<a name="messageBindingObjectDescription"></a>`description` | string<sup>1</sup> | Provides additional information for application developers: describes the message type or format. | OPTIONAL | - 
 <a name="messageBindingObjectExpiry"></a>`expiry` |  integer | The recommended setting the client should use for the TTL (Time-To-Live) of the message. This is a period of time expressed in milliseconds and set by the application that puts the message. `expiry` values are API dependant e.g., MQI and JMS use different units of time and default values for *`unlimited`*. General information on IBM MQ message expiry can be found on this [page](https://www.ibm.com/support/knowledgecenter/en/SSFKSJ_latest/com.ibm.mq.ref.dev.doc/q097490_.html) in the IBM MQ Knowledge Center. | OPTIONAL [*`unlimited`*] | `expiry` value MUST be either `zero` (*`unlimited`*) or greater than zero. 
 <a name="messageBindingObjectBindingVersion"></a>`bindingVersion` | string | The version of this binding. | OPTIONAL [`latest`] | -