Don't link to analyzer_cli

Instead of linking to the DISCONTINUED https://pub.dartlang.org/packages/analyzer_cli, link to https://github.com/dart-lang/sdk/tree/master/pkg/analyzer_cli#dartanalyzer.

(I'm hoping this is a simple enough change that you can take it through this PR.)

Closes dart-lang#35350
dart-lang#35350

GitOrigin-RevId: 579cddb
Change-Id: I584ad6d9ef1f35aef030dc85c1d5c0081f29fe04
Reviewed-on: https://dart-review.googlesource.com/c/86520
Commit-Queue: Kathy Walrath <[email protected]>
Reviewed-by: Kathy Walrath <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>

Author: kwalrath

pkg/analyzer/README.md

@@ -4,7 +4,7 @@ This package provides a low-level _library_ that performs static analysis
 of Dart code. It is useful for tool
 integration and embedding.
 
-End-users should use the [dartanalyzer][analyzercli] command-line tool
+End-users should use the [dartanalyzer][] command-line tool
 to analyze their Dart code.
 
 Integrators that want to add Dart support to their editor
@@ -96,7 +96,7 @@ this causes for our clients, but some pain is inevitable.
 See the [LICENSE] file.
 
 [serverapi]: https://htmlpreview.github.io/?https://github.com/dart-lang/sdk/blob/master/pkg/analysis_server/doc/api.html
-[analyzercli]: https://github.com/dart-lang/sdk/tree/master/pkg/analyzer_cli
+[dartanalyzer]: https://github.com/dart-lang/sdk/tree/master/pkg/analyzer_cli#dartanalyzer
 [list]: https://groups.google.com/a/dartlang.org/forum/#!forum/analyzer-discuss
 [lintrules]: http://dart-lang.github.io/linter/lints/
 [glob]: https://pub.dartlang.org/packages/glob