docs: correct placement of param descriptions

packages/common/src/pipes/date_pipe.ts

@@ -24,12 +24,6 @@ import {invalidPipeArgumentError} from './invalid_pipe_argument_error';
  * WARNING: The pipe uses the Internationalization API, and is therefore
  * only reliable in Chrome and Opera browsers.
  *
- * @param date_expression A date object or a number (milliseconds since UTC epoch)
- * or an ISO string (https://www.w3.org/TR/NOTE-datetime).
- * @param format A predefined or custom style that specifies which date-time components
- * to include and how to display them. See details below. 
- * @returns A date string in the desired format. 
- *
  * @usageNotes
  *
  * The result of this pipe is not re-evaluated when the input is mutated. To avoid the need to
@@ -159,14 +153,15 @@ export class DatePipe implements PipeTransform {
   constructor(@Inject(LOCALE_ID) private locale: string) {}
 
   /**
-   * @param date_expression A date object or a number (milliseconds since UTC epoch) or an ISO string
-   * (https://www.w3.org/TR/NOTE-datetime).
+   * @param value The date expression, a `Date` object or a number
+   * (milliseconds since UTC epoch) or an ISO string (https://www.w3.org/TR/NOTE-datetime). 
    * @param format The date/time components to include, using pre-defined options or a 
    * custom format string.  
    * @param timezone A time-zone offset (such as `'+0430'`), or a standard
    * UTC/GMT or continental US time zone abbreviation. Deafault is
    * the local system time zone of the end-user's machine.
-   * @param locale A locale identifier. Default is `LOCALE_ID`. 
+   * @param locale A locale identifier. Default is `LOCALE_ID`.
+   * @returns A date string in the desired format.  
    */
   transform(value: any, format = 'mediumDate', timezone?: string, locale?: string): string|null {
     if (value == null || value === '' || value !== value) return null;