old_contents: /**
   * WidgetHeader component for widget headers.
   *
   * Site Kit by Google, Copyright 2021 Google LLC
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /**
   * WordPress dependencies
   */
  import { sprintf, _x, __, _n } from '@wordpress/i18n';
  import { Fragment } from '@wordpress/element';
  
  /**
   * Internal dependencies
   */
  import Data from 'googlesitekit-data';
  import { MODULES_ANALYTICS } from '../../../datastore/constants';
  import WidgetHeaderTitle from '../../../../../googlesitekit/widgets/components/WidgetHeaderTitle';
  import WidgetHeaderCTA from '../../../../../googlesitekit/widgets/components/WidgetHeaderCTA';
  import { CORE_USER } from '../../../../../googlesitekit/datastore/user/constants';
  const { useSelect } = Data;
  
  export default function Header() {
  	const url = useSelect( ( select ) => select( MODULES_ANALYTICS ).getServiceReportURL( 'trafficsources-overview' ) );
  	const dateRangeNumberOfDays = useSelect( ( select ) => select( CORE_USER ).getDateRangeNumberOfDays() );
  	const title = sprintf(
  		/* translators: %s: number of days */
  		_n( 'Top acquisition channels over the last %s day', 'Top acquisition channels over the last %s days', dateRangeNumberOfDays, 'google-site-kit', ),
  		dateRangeNumberOfDays,
  	);
  
  	const headerCTALabel = sprintf(
  		/* translators: %s: module name. */
  		__( 'See full stats in %s', 'google-site-kit' ),
  		_x( 'Analytics', 'Service name', 'google-site-kit' )
  	);
  
  	return (
  		<Fragment>
  			<WidgetHeaderTitle title={ title } />
  			<WidgetHeaderCTA href={ url } label={ headerCTALabel } external />
  		</Fragment>
  	);
  }
  
new_contents: /**
   * Header component for ModuleAcquisitionChannelsWidget component.
   *
   * Site Kit by Google, Copyright 2021 Google LLC
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /**
   * WordPress dependencies
   */
  import { sprintf, _x, __, _n } from '@wordpress/i18n';
  import { Fragment } from '@wordpress/element';
  
  /**
   * Internal dependencies
   */
  import Data from 'googlesitekit-data';
  import { MODULES_ANALYTICS } from '../../../datastore/constants';
  import WidgetHeaderTitle from '../../../../../googlesitekit/widgets/components/WidgetHeaderTitle';
  import WidgetHeaderCTA from '../../../../../googlesitekit/widgets/components/WidgetHeaderCTA';
  import { CORE_USER } from '../../../../../googlesitekit/datastore/user/constants';
  const { useSelect } = Data;
  
  export default function Header() {
  	const url = useSelect( ( select ) => select( MODULES_ANALYTICS ).getServiceReportURL( 'trafficsources-overview' ) );
  	const dateRangeNumberOfDays = useSelect( ( select ) => select( CORE_USER ).getDateRangeNumberOfDays() );
  	const title = sprintf(
  		/* translators: %s: number of days */
  		_n( 'Top acquisition channels over the last %s day', 'Top acquisition channels over the last %s days', dateRangeNumberOfDays, 'google-site-kit', ),
  		dateRangeNumberOfDays,
  	);
  
  	const headerCTALabel = sprintf(
  		/* translators: %s: module name. */
  		__( 'See full stats in %s', 'google-site-kit' ),
  		_x( 'Analytics', 'Service name', 'google-site-kit' )
  	);
  
  	return (
  		<Fragment>
  			<WidgetHeaderTitle title={ title } />
  			<WidgetHeaderCTA href={ url } label={ headerCTALabel } external />
  		</Fragment>
  	);
  }
  
subject: Update header comment.