Remove the end period of a URL in project template (flutter#99816)

Author: asashour

dev/integration_tests/android_embedding_v2_smoke_test/pubspec.yaml

@@ -71,7 +71,7 @@ flutter:
   #   - images/a_dot_ham.jpeg
 
   # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
+  # https://flutter.dev/assets-and-images/#resolution-aware
 
   # For details regarding adding assets from package dependencies, see
   # https://flutter.dev/assets-and-images/#from-packages

dev/integration_tests/ios_add2app_life_cycle/flutterapp/pubspec.yaml

@@ -64,7 +64,7 @@ flutter:
   #  - images/a_dot_ham.jpeg
 
   # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
+  # https://flutter.dev/assets-and-images/#resolution-aware
 
   # For details regarding adding assets from package dependencies, see
   # https://flutter.dev/assets-and-images/#from-packages

dev/integration_tests/ios_app_with_extensions/pubspec.yaml

@@ -66,7 +66,7 @@ flutter:
   #   - images/a_dot_ham.jpeg
 
   # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
+  # https://flutter.dev/assets-and-images/#resolution-aware
 
   # For details regarding adding assets from package dependencies, see
   # https://flutter.dev/assets-and-images/#from-packages

packages/flutter_tools/templates/app/pubspec.yaml.tmpl

@@ -74,7 +74,7 @@ flutter:
   #   - images/a_dot_ham.jpeg
 
   # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
+  # https://flutter.dev/assets-and-images/#resolution-aware
 
   # For details regarding adding assets from package dependencies, see
   # https://flutter.dev/assets-and-images/#from-packages

packages/flutter_tools/templates/module/common/pubspec.yaml.tmpl

@@ -49,7 +49,7 @@ flutter:
   #   - images/a_dot_ham.jpeg
 
   # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
+  # https://flutter.dev/assets-and-images/#resolution-aware
 
   # For details regarding adding assets from package dependencies, see
   # https://flutter.dev/assets-and-images/#from-packages

packages/flutter_tools/templates/package/pubspec.yaml.tmpl

@@ -31,7 +31,7 @@ flutter:
   # https://flutter.dev/assets-and-images/#from-packages
   #
   # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
+  # https://flutter.dev/assets-and-images/#resolution-aware
 
   # To add custom fonts to your package, add a fonts section here,
   # in this "flutter" section. Each entry in this list should have a

packages/flutter_tools/templates/plugin_shared/pubspec.yaml.tmpl

@@ -131,7 +131,7 @@ flutter:
   # https://flutter.dev/assets-and-images/#from-packages
   #
   # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
+  # https://flutter.dev/assets-and-images/#resolution-aware
 
   # To add custom fonts to your plugin package, add a fonts section here,
   # in this "flutter" section. Each entry in this list should have a