fix: remove mentions of Operation Item Object (#988)

Author: char0n

spec/asyncapi.md

@@ -1585,7 +1585,7 @@ Field Name | Type | Description
 <a name="componentsSchemas"></a> schemas | Map[`string`, [Multi Format Schema Object](#multiFormatSchemaObject) \| [Schema Object](#schemaObject) \| [Reference Object](#referenceObject)] | An object to hold reusable [Schema Object](#schemaObject). If this is a [Schema Object](#schemaObject), then the `schemaFormat` will be assumed to be "application/vnd.aai.asyncapi+json;version=`asyncapi`" where the version is equal to the [AsyncAPI Version String](#A2SVersionString).
 <a name="componentsServers"></a> servers | Map[`string`, [Server Object](#serverObject) \| [Reference Object](#referenceObject)] | An object to hold reusable [Server Objects](#serverObject).
 <a name="componentsChannels"></a> channels | Map[`string`, [Channel Object](#channelObject) \| [Reference Object](#referenceObject)] | An object to hold reusable [Channel Objects](#channelObject).
-<a name="componentsOperations"></a> operations | Map[`string`, [Operation Item Object](#operationObject) \| [Reference Object](#referenceObject)] | An object to hold reusable [Operation Item Objects](#operationObject).
+<a name="componentsOperations"></a> operations | Map[`string`, [Operation Object](#operationObject) \| [Reference Object](#referenceObject)] | An object to hold reusable [Operation Objects](#operationObject).
 <a name="componentsMessages"></a> messages | Map[`string`, [Message Object](#messageObject) \| [Reference Object](#referenceObject)] | An object to hold reusable [Message Objects](#messageObject).
 <a name="componentsSecuritySchemes"></a> securitySchemes| Map[`string`, [Security Scheme Object](#securitySchemeObject) \| [Reference Object](#referenceObject)] | An object to hold reusable [Security Scheme Objects](#securitySchemeObject).
 <a name="componentsServerVariables"></a> serverVariables | Map[`string`, [Server Variable Object](#serverVariableObject) \| [Reference Object](#referenceObject)] | An object to hold reusable [Server Variable Objects](#serverVariableObject).