Merge pull request MicrosoftDocs#361 from ghurlman/control-usage-fix

Fixed component framework property reference

Author: Nkrb

powerapps-docs/developer/component-framework/manifest-schema-reference/property.md

@@ -25,7 +25,7 @@ ms.assetid: 45f4872d-c1d2-4c5a-8721-251b96ede370
 |`name`|Name of the property|`string`|Yes|
 |`display-name-key`|Used in the customization screens as localized strings that describes the name of the property.|`string`|Yes|
 |`of-type`|Defines the data type of the property|See [Remarks](#remarks)|Optional|
-|`usage`|The usage attribute identifies if the property is meant to represent an entity attribute that the component can change (bound) or read-only values (input)|`bound`,`input` or `output`|Optional|
+|`usage`|The usage attribute identifies if the property is meant to represent an entity attribute that the component can change (bound) or read-only values (input)|`bound` or `input`|Optional|
 |`required`|Whether the property is required or not|`boolean`|Optional|
 |`of-type-group`|Name of the type-group as defined in manifest|`string`|Optional|
 |`description-key`|Used in the customization screens as localized strings that describes the description of the property.|`string`|Optional|