docblock corrections

includes/api/class-wc-api-customers.php

@@ -200,7 +200,7 @@ class WC_API_Customers extends WC_API_Resource {
 	 *
 	 * @since 2.1
 	 * @param string $email the customer email
-	 * @param string $fields
+	 * @param array $fields
 	 * @return array
 	 */
 	public function get_customer_by_email( $email, $fields = null ) {

includes/api/class-wc-api-reports.php

@@ -277,7 +277,7 @@ class WC_API_Reports extends WC_API_Resource {
 				case 'day' :
 					$time = date( 'Y-m-d', strtotime( "+{$i} DAY", $this->report->start_date ) );
 					break;
-				case 'month' :
+				default :
 					$time = date( 'Y-m', strtotime( "+{$i} MONTH", $this->report->start_date ) );
 					break;
 			}

includes/api/class-wc-api-webhooks.php

@@ -63,7 +63,7 @@ class WC_API_Webhooks extends WC_API_Resource {
 	 * Get all webhooks
 	 *
 	 * @since 2.2
-	 * @param string $fields
+	 * @param array $fields
 	 * @param array $filter
 	 * @param int $page
 	 * @return array