[file_selector_web] update documentation flutter#76067 (flutter#3554)

Fix documentation typo. This package is file_selector, not file_picker!

Co-authored-by: David Iglesias <ditman@gmail.com>

packages/file_selector/file_selector_web/README.md

@@ -1,30 +1,30 @@
-# file_picker_web
+# file_selector_web
 
-The web implementation of [`file_picker`][1].
+The web implementation of [`file_selector`][1].
 
 ## Usage
 
 ### Import the package
 To use this plugin in your Flutter Web app, simply add it as a dependency in
-your pubspec alongside the base `file_picker` plugin.
+your pubspec alongside the base `file_selector` plugin.
 
 _(This is only temporary: in the future we hope to make this package an
-"endorsed" implementation of `file_picker`, so that it is automatically
-included in your Flutter Web app when you depend on `package:file_picker`.)_
+"endorsed" implementation of `file_selector`, so that it is automatically
+included in your Flutter Web app when you depend on `package:file_selector`.)_
 
 This is what the above means to your `pubspec.yaml`:
 
 ```yaml
 ...
 dependencies:
   ...
-  file_picker: ^0.7.0
-  file_picker_web: ^0.7.0
+  file_selector: ^0.7.0
+  file_selector_web: ^0.7.0
   ...
 ```
 
 ### Use the plugin
-Once you have the `file_picker_web` dependency in your pubspec, you should
-be able to use `package:file_picker` as normal.
+Once you have the `file_selector_web` dependency in your pubspec, you should
+be able to use `package:file_selector` as normal.
 
-[1]: ../file_picker/file_picker
+[1]: https://pub.dev/packages/file_selector