docs(common): improve deprecation notices to be parsed by tslint

Closes: #24237
Closes: #24249

packages/http/src/backends/browser_xhr.ts

@@ -13,7 +13,7 @@ import {Injectable} from '@angular/core';
  *
  * Take care not to evaluate this in non-browser contexts.
  *
- * @deprecated use @angular/common/http instead
+ * @deprecated see https://angular.io/guide/http
  */
 @Injectable()
 export class BrowserXhr {

packages/http/src/backends/jsonp_backend.ts

@@ -23,7 +23,7 @@ const JSONP_ERR_WRONG_METHOD = 'JSONP requests must use GET request method.';
 /**
  * Base class for an in-flight JSONP request.
  *
- * @deprecated use @angular/common/http instead
+ * @deprecated see https://angular.io/guide/http
  */
 export class JSONPConnection implements Connection {
   private _id: string;
@@ -136,7 +136,7 @@ export class JSONPConnection implements Connection {
 /**
  * A {@link ConnectionBackend} that uses the JSONP strategy of making requests.
  *
- * @deprecated use @angular/common/http instead
+ * @deprecated see https://angular.io/guide/http
  */
 @Injectable()
 export class JSONPBackend extends ConnectionBackend {

packages/http/src/backends/xhr_backend.ts

@@ -28,7 +28,7 @@ const XSSI_PREFIX = /^\)\]\}',?\n/;
  * This class would typically not be created or interacted with directly inside applications, though
  * the {@link MockConnection} may be interacted with in tests.
  *
- * @deprecated use @angular/common/http instead
+ * @deprecated see https://angular.io/guide/http
  */
 export class XHRConnection implements Connection {
   request: Request;
@@ -187,7 +187,7 @@ export class XHRConnection implements Connection {
  * with different `cookieName` and `headerName` values. See the main HTTP documentation for more
  * details.
  *
- * @deprecated use @angular/common/http instead
+ * @deprecated see https://angular.io/guide/http
  */
 export class CookieXSRFStrategy implements XSRFStrategy {
   constructor(
@@ -225,7 +225,7 @@ export class CookieXSRFStrategy implements XSRFStrategy {
  *   }
  * }
  * ```
- * @deprecated use @angular/common/http instead
+ * @deprecated see https://angular.io/guide/http
  */
 @Injectable()
 export class XHRBackend implements ConnectionBackend {