fix typo

public/app/features/dashboard/import/dash_import.html

@@ -36,7 +36,7 @@
 
 			<div class="gf-form-group">
 				<div class="gf-form">
-					<textarea rows="7" data-share-panel-url="" class="gf-form-input" ng-ctrl="ctrl.jsonText"></textarea>
+					<textarea rows="7" data-share-panel-url="" class="gf-form-input" ng-model="ctrl.jsonText"></textarea>
 				</div>
 				<button type="button" class="btn btn-secondary" ng-click="ctrl.loadJsonText()">
 					<i class="fa fa-paste"></i>